sample test 1
Student: ___________________________________________________________________________
1. Which of the following is a correct metric unit for volume? 
 
A. Smidgens
B. Drops
C. Microns
D. Liters
 
2. A certain building is sold for 10 Megadollars. What is the correct scientific notation for this selling price? 
 
A. 1.0  106 dollars.
B. 10  106 dollars.
C. 1.0  105 dollars.
D. 10  105 dollars.
 
3. One inch is defined as 2.54 centimeters. The correct expression for a one-inch length, expressed in meters, is 
 
A. 2.54  102 meters.
B. 2.54  101 meters.
C. 2.54  10-2 meters.
D. 2.54  102 meters.
 
4. The metric unit most comparable in size to the English inch unit is the 
 
A. millimeter.
B. kilometer.
C. centimeter.
D. micrometer.
E. meter.
 
5. An auto, starting from rest, undergoes constant acceleration and covers a distance of 1200 meters. The final speed of the auto is 60 meters/sec. How long does it take the car to cover the 1200 meters? 
 
A. 20 s.
B. 40 s.
C. 0.05 s.
D. 72,000 s.
 
6. A car traveling at constant speed 
 
A. does not turn.
B. travels more distance in a second the longer the car travels.
C. can change direction.
D. cannot go uphill.
 
7. The following quantities relate to the rate of change of position. Which pair will always have the same magnitude? 
 
A. Average speed and average velocity.
B. Average speed and instantaneous speed.
C. Average velocity and instantaneous velocity.
D. Instantaneous speed and instantaneous velocity.
 
8. The acceleration of a body cannot be zero at a point where 
 
A. the instantaneous velocity is zero.
B. the instantaneous velocity is positive but decreasing.
C. the average velocity is positive.
D. none of these.
 
9. A student releases a ball from rest on an inclined plane and measures that it travels a distance of 0.5 m in a time of 2.0 s. The acceleration of the ball is 
 
A. 0.125 m/s2.
B. 0.25 m/s2.
C. 0.5 m/s2.
D. 1.0 m/s2.
 
10. A car travels a distance of 80 km. For the first 30 minutes it is driven at a constant speed of 80 km/hr. The motor begins to vibrate and the driver reduces the speed to 40 km/hr for the rest of the trip. The average speed for the entire trip is 
 
A. 60.0 km/hr.
B. 53.3 km/hr.
C. 50.0 km/hr.
D. 47.5 km/hr.
E. 40.0 km/hr.
 
11. Which of the following is not an appropriate unit for measuring acceleration? 
 
A. miles/hr/s.
B. ft/s2.
C. m/s.
D. km/min/s.
E. m/min2.
 
12. A car rolls down an incline starting from rest. A graph of position versus time is made for this motion. One can get the 
 
A. distance traveled from the slope of the graph.
B. instantaneous velocity from the slope of the graph.
C. acceleration from the slope of the graph.
D. velocity from the area under the graph.
E. acceleration from the area under the graph.
 
13. Which of the following quantities relating to motion is not a vector? 
 
A. Displacement.
B. Speed.
C. Velocity.
D. Acceleration.
E. All of these are vectors.
 
14. A car moving initially at 20 m/s comes gradually to a stop in 400 m. What was the acceleration of the car? 
 
A. -0.5 m/s2.
B. - 5 m/s2.
C. -10 m/s2.
D. - 20 m/s2.

 
15. Refer to the graph above. The velocity of this object at the start of the motion is 
 
A. negative.
B. positive.
C. It is not moving.
D. It is not possible to tell from the graph.
 
16. Refer to the graph above. The speed of the object is largest 
 
A. in region A.
B. in region B.
C. in region C.
D. in region D.
E. in region E.
 
17. Refer to the graph above. For the entire motion, the average velocity is 
 
A. negative.
B. positive.
C. It is not moving.
D. It is not possible to tell from the graph.
 
18. Neglecting friction, if a Cadillac and Volkswagen start rolling down a hill together, the heavier Cadillac will get to the bottom 
 
A. before the Volkswagen.
B. after the Volkswagen.
C. at the same time as the Volkswagen.
 
19. Suppose you throw a ball vertically downward with a speed of 15 m/s. Neglecting air friction, what would be the speed of the ball one second later? 
 
A. -9.8 m/s2.
B. 9.8 m/s2.
C. 5.2 m/s.
D. 15 m/s.
E. 24.8 m/s.
 
20. A person standing at the edge of a cliff throws one ball straight up and another ball straight down at the same initial speed. Neglecting air resistance, the ball which hits the ground at the base of the cliff with the greater speed is the one initially thrown 
 
A. upward.
B. downward.
C. Both hit with the same speed.
 
21. You toss a ball straight up in the air. At the highest point, the ball's 
 
A. velocity and acceleration are zero.
B. acceleration is zero but not its velocity.
C. velocity is zero and the acceleration is upward.
D. velocity is zero and the acceleration is downward.
 
22. A football is thrown upward at some angle above the horizontal. If we neglect air friction, then we can conclude that the acceleration vector of the football is 
 
A. opposite to the velocity vector.
B. zero.
C. along the direction of motion.
D. down.
 
23. The acceleration due to the Earth's gravity, in English units, is 32 ft/s2. In the absence of air friction, a ball is dropped from rest. Its speed on striking the ground is exactly 88 ft/s. From what height was the ball dropped? 
 
A. 121 ft.
B. 242 ft.
C. 88 ft.
D. 165 ft.
 
24. A stone is thrown upward from a bridge at a speed of 10 m/s. It narrowly misses the bridge on the way back down, and hits the water at 30m/s. The bridge is about 
 
A. 3 m high.
B. 10 m high.
C. 30 m high.
D. 40 m high.
 
25. A 10-kg object dropped from a certain window strikes the ground in 2.0 s. Neglecting air resistance, a 5-kg object dropped from the same window strikes the ground in 
 
A. 1.0 s.
B. 2.0 s.
C. 4.0 s.
D. 8.0 s.
 
26. A ball is thrown straight up. It reaches its highest point and then falls back. Which of the following is the correct statement? 
 
A. At the highest point in its motion, the ball's velocity is zero.
B. At the highest point in its motion, the ball's acceleration is zero
C. Throughout its motion, the ball's velocity is zero.
D. Throughout its motion, the ball's acceleration is zero.
E. At the highest point in its motion, the ball's velocity and acceleration are zero.
 
27. After 1 second, a ball dropped from rest will have fallen 
 
A. 1.0 m.
B. 2.45 m.
C. 4.9 m.
D. 9.8 m.
E. 19.6 m.
 
28. A ball is projected straight up with an initial velocity of 20 m/s. After 3 seconds its velocity will be 
 
A. -20 m/s.
B. -9.4 m/s.
C. 0 m/s.
D. 9.4 m/s.
E. 20 m/s.
 
29. All except one of the following require the application of a net force. Which one is the exception? 
 
A. changing an object from a state of rest to a state of motion
B. maintaining an object in motion at a constant velocity
C. changing an object's speed without changing its direction of motion
D. maintaining an object in uniform circular motion
E. changing an object's direction of motion without changing its speed
 
30. A 10-pound sack of potatoes falls from an airplane. As the velocity of the falling sack increases, so does the air resistance on it. When the air resistance equals 10 pounds, the acceleration of the sack will be 
 
A. zero.
B. 9.8 m/s.
C. 9.8 m/s2.
D. 100 ft/s2.
 
31. A single constant 10-pound force F1 acts on a body, causing it to accelerate. Then, while F1 continues to act, a second constant force F2 is applied to the body, which comes to a momentary stop. The magnitude of F2 is 
 
A. zero.
B. a bit less than 10 pounds.
C. exactly 10 pounds.
D. larger than 10 pounds.
E. not enough information to tell.
 
32. The frictional force, due to air resistance, acting on an object is always 
 
A. in the direction of the objects motion.
B. in the opposite direction to the objects motion.
C. greater than the net force.
D. in the upward direction.
E. smaller than object's weight
 
33. The erroneous idea that an object needs a force on it to keep moving even at constant velocity was held by 
 
A. Galileo.
B. Aristotle.
C. Newton.
 
34. A book weighing 10 N is held at rest in the palm of the hand. The reaction to the force of the hand on the book is a force of 
 
A. 10 N exerted by the Earth on the book.
B. 10 N exerted by the book on the Earth.
C. 10 N exerted by the book on the hand.
D. 0 N.
 
35. A parachutist jumping from an airplane reaches a terminal velocity when the force of air resistance is 980 N. The mass of the parachutist is 
 
A. 100 kg.
B. 100 lb.
C. 980 kg.
D. 980 lb.
E. 220 lb.
 
36. A child, whose weight is 150 newtons, lifts a pumpkin from the ground with a force of 50 newtons. The force the pumpkin exerts on the child is 
 
A. zero.
B. greater than zero but less than 50 newtons.
C. 50 newtons.
D. more than 50 newtons.
 
37. The surface gravity of Mars is 3.7 m/s2. If a person with mass of 100 kg were parachuting on Mars, what would be the force exerted by air resistance at terminal velocity? 
 
A. 100 N
B. 370 N
C. 490 N
D. 980 N
 
38. A dog weighs 250 N. What is his approximate weight in pounds (lb)? 
 
A. 250 lb.
B. 100 lb.
C. 55 lb.
D. 32 lb.
E. 25 lb.
 
39. Your mass is 50 kg. Suppose you are standing on a scale in an elevator that starts moving up and increases its speed at the rate of 2 m/s every second. What would be the reading on the scale? 
 
A. 590 N
B. 490 N
C. 390 N
D. 100 N
E. 0
 
40. Earth's gravity attracts a person with a force of 120 lbs. The force with which the Earth is attracted towards the person is 
 
A. zero.
B. small but not zero.
C. billions and billions of tons.
D. 120 lbs.
 
41. Astronauts orbiting the Earth in the space shuttle experienced weightlessness because 
 
A. they, and all things with them, were in free fall.
B. the Earth's gravity does not extend that far.
C. gravity is diluted because the space shuttle is spinning.
D. the shuttle shielded them from the Earth's gravity.
 
42. An object weighs 20 Newtons on Earth. What is its approximate mass ? 
 
A. 2 kg.
B. 20 g.
C. 10 kg.
D. 196 kg.
E. 640 kg.
 
43. Which of the following is NOT a vector? 
 
A. acceleration
B. weight
C. mass
D. velocity
E. All of these choices are correct.
 
44. Two cars that have the same mass are moving around a circular track at the same constant speed. The track is perfectly level. If car 1 is at the inner edge of the track and car 2 is at the outer edge, then 
 
A. the frictional force on car 1 is less than the frictional force on car 2.
B. the frictional force on car 1 is greater than the frictional force on car 2.
C. the frictional forces on both cars are equal and greater than zero.
D. the frictional forces on both cars are zero.
 
45. A cyclist races around a circular track at the constant speed of 20 m/s. The radius of the track is 50 m. The acceleration of the cyclist is 
 
A. zero.
B. 8 m/s2, toward the center of the track.
C. 10 m/s2, downward.
D. 20 m/s2, in the direction of travel.

ANSWERS

					1. 24.44m/s    2. 11.18 years     3. 0.000363N    4. 138.8lb

1.	D
2.	B
3.	C
4.	C
5.	B
6.	C
7.	D
8.	B
9.	B
10.	B
11.	C
12.	B
13.	B
14.	A
15.	C
16.	D
17.	A
18.	C
19.	E
20.	C
21.	D
22.	D
23.	A
24.	D
25.	B
26.	A
27.	C
28.	B
29.	B
30.	A
31.	D
32.	B
33.	B
34.	C
35.	A
36.	C
37.	B
38.	C
39.	A
40.	D
41.	A
42.	A
43.	C
44.	B
45.	B

SAMPLE EXTRA PROBLEMS

1.	Acar is travelling at 88km/hr.  Find the speed in m/s 

     

2.	A comet circles the sun with a radius of orbit 5 times larger than the orbit of the earth around the sun.  Find the period of the orbit in years.	

3.	A 1,000,000 kg mass is separated from a 240,000kg mass by 210m.   Calculate the force of gravitational attraction between them.

4.	An elevator is accelerating down at 3N/kg, calculate the apparent weight of a 200 lb man.