Accelerated Motion
Practice Test
1.
If the motion in Figure 3-3 continued on at that same acceleration, what would the object's speed be at
t
= 10.00 s?
a.
100.0 m/s
b.
25.0 m/s
c.
40.0 m/s
d.
50.0 m/s
Hint
2.
Find the uniform acceleration that causes a car's velocity to change from 27 m/s to 45 m/s in a 6.0-s period.
a.
18.0 m/s
2
b.
18.0 m/s
c.
3.0 m/s
2
d.
3.0 m/s
Hint
3.
What is a rope's velocity 4.0 s after being dropped from a hovering helicopter?
a.
-4.0×10
2
m/s
b.
-2.0×10
1
m/s
c.
-4.0×10
1
m/s
d.
4.0×10
1
m/s
Hint
4.
How long will it take an airplane at rest that accelerates uniformly at 2.5 m/s
2
to reach a ground velocity of 7.0×10
1
m/s that is required for take off?
a.
35 s
b.
28 s
c.
11 s
d.
4 s
Hint
5.
A 75-kg swimmer steps off a 10.0-m tower. What is the swimmer's velocity on hitting the water?
a.
-14.0 m/s
b.
27.1 m/s
c.
38.3 m/s
d.
0.25 m/s
Hint
6.
__________ is the change in velocity divided by the time needed for the change to occur.
a.
Displacement
b.
Average acceleration
c.
Average velocity
d.
Speed
Hint
