1.
An object, initially at
rest, falls freely near the earth’s surface. How long does it take the object to
reach a speed of 98 m/s ?
2. A rock is dropped
from a cliff. Approximately how long does it take to fall 45 m ?
3. What is the speed of
a rock, initially at rest, that has fallen 66 m near the Earth’s surface ?
4. An astronaut drops a
rock from rest on the Moon’s surface. How far will the rock fall in 2.0 s ?
(Acceleration due to gravity on the Moon is 1.6 m/s2)
5. 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 ?
6. 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 _______________
7. 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 ?