1. Starting from
rest, an onject rolls freely down an incline that is 10 m long in 2.0 s. The acceleration
of the object is
5 m/s
5 m/s2
10 m/s
10 m/s2
2. An object, initially at rest,
falls freely near the earths surface. How long does it take the object to reach
a speed of 98 m/s ?
0.1 s
10 s
98 s
960 s
3. A rock is dropped from a
cliff. Approximately how long does it take to fall 45 m ?
1.0 s
5.0 s
3.0 s
8.0 s
4. What is the speed of a rock,
initially at rest, that has fallen 66 m near the Earths surface ?
25 m/s
36 m/s
96 m/s
1300 m/s
5. An astronaut drops a rock from
rest on the Moons surface. How far will the rock fall in 2.0 s ? (Acceleration due
to gravity on the Moon is 1.6 m/s2)
3.2 m
1.6 m
32 m
2.4 m
6. A student drops an object from
the top of a building which is 19.6 m high. How long does it take the object
to fall to the ground ?
19.6 s
2.00 s
3.00 s
4.00 s
7. A cart initially traveling at
10 m/s accelerates uniformly at 3.0 m/s2 for 4.0 s. The distance traveled by
the cart at the end of this 4.0 s is
40 m
64 m
88 m
180 m
8. An object is allowed to fall
freely near the surface of a planet. The object falls 54 m in the first 3.0 s.
The acceleration due to gravity
on that planet is
6.0 m/s2
12 m/s2
27 m/s2
108 m/s2
9. An object initially at rest
accelerates at 5.0 m/s2 until it attains a speed of 30 m/s. What distance does
the object move while accelerating ?
30 m
90 m
3 m
600 m
10. An object initially traveling
at 20. m/s west decelerates uniformly at 4.0 m/s2 for 2.0 s. The displacement
of this object is
32 m east
32
m west
48 m east
48 m west
Base your answers to questions 11
through 16 on the speed-time graph below representing the motion of a cart.
11. The cart travels the shortest
distance in interval
0-5 s
5-8 s
8-11 s
11-16 s
12. The carts average speed
is greatest during interval
0-5 s
5-8 s
8-11 s
11-16 s
13. The cart travels the greatest
distance during interval
0-5 s
5-8 s
8-11 s
11-16 s
14. The magnitude of the
carts acceleration is greatest during interval
0-5 s
5-8 s
8-11 s
11-16 s
15. During how many intervals is
the carts acceleration equal to zero ?
1
2
3
4
16. What is the
distance traveled by the object during the time interval 8 to 11 seconds ?
30 m
60
m
90 m
180 m
17. An object initially traveling
in a straight line with a speed of 5.0 m/s is accelerated at 2.0 m/s2 for 4.0
s. The total distance traveled is
36 m
24 m
16 m
4.0 m
Base your answers to questions 18
through 20 on the distance-time graph below representing the motion of an object.
18. What is the average speed of
the object between 3 and 7 seconds ?
10. m/s
2.5 m/s
5.0 m/s
15 m/s
19. What is the average speed of
the object between 7 and 9 seconds ?
10. m/s
2.5 m/s
5.0 m/s
0 m/s
20. During which interval is the
objects speed greatest ?
1 3 s
3 7 s
7 9 s
9 12 s
21. Which of the graphs below
best represents an object falling freely near the surface of the Earth ?
A
B
C
D
22. A boat initially traveling at
10. m/s accelerates uniformly at the rate of 5.0 m/s2 for 10. s. How far does
the boat travel during this time ?
50. m
250 m
350
m
500 m
23. A clam
dropped by a seagull takes 3.0 s to hit the ground. What is the sea gull's approximate
height above the ground at the time the clam was dropped ?
15 m
30. m
45
m
90. m
24. A skier
starting from rest skis straight down a slope 50. m long in 5.0 s. What is the magnitude
of the acceleration of the skier ?
20. m/s2
9.8 m/s2
5.0 m/s2
4.0 m/s2
25. A car moving at a constant
speed of 4.10 m/s then accelerates uniformly at 3.20 m/s2. What will be its
speed when it has traveled a distance of 40.0m ?
8.50 m/s
16.5
m/s
24.5 m/s
273 m/s