Section 6.1
Projectile Motion
Practice Test
1.
Any moving object that moves through the air only under the force of gravity (after initial thrust) is a(n) __________.
a.
projectile
b.
vector
c.
free floater
d.
satellite
Hint
2.
The horizontal distance a projectile travels is the __________.
a.
range
b.
trajectory
c.
torque
d.
maximum height
Hint
3.
A projectile's path through space is called its __________.
a.
flight plan
b.
period
c.
trajectory
d.
range
Hint
4.
The __________ is the height of the projectile when the vertical velocity is zero.
a.
trajectory
b.
torque
c.
range
d.
maximum height
Hint
5.
You accidentally throw your car keys horizontally at 5.0 m/s from a cliff 45 m high. How far from the base of the cliff should you look for your keys?
a.
45 m
b.
135 m
c.
225 m
d.
15 m
Hint
6.
The time a projectile is in the air is the __________.
a.
flight time
b.
trajectory
c.
centripetal acceleration
d.
range
Hint
7.
A stone is thrown horizontally at 20 m/s from the top of a cliff 63 m high. How fast is it moving the instant before it hits the ground?
a.
40 m/s
b.
38 m/s
c.
33 m/s
d.
29 m/s
Hint
8.
In Figure 6-1, if the baseballs fell a vertical distance of 1.6 m from the first to the last image, what is the time interval between frames?
a.
0.081 s
b.
0.071 s
c.
0.095 s
d.
0.23 s
Hint
9.
A stone is thrown horizontally at 20.0 m/s from the top of a cliff 63 m high. How far from the base of the cliff does the stone hit the ground?
a.
66 m
b.
42 m
c.
13 m
d.
72 m
Hint
10.
In Figure 6-1, if the baseballs fell a vertical distance of 1.6 m from the first to the last image, how long did it take them to fall?
a.
0.57 s
b.
0.40 s
c.
0.32 s
d.
0.16 s
Hint
