Practice Problems: Acceleration due to gravity
Physics 534
Practice Problems: Acceleration due to gravity
Ignore air resistance for all problems.
A brick is dropped from the roof of a building. The brick strikes the ground in 2.50 sec. Air resistance may be ignored. How tall is the building?
Jillian angrily throws her engagement ring straight up from the roof of the building,
12.0 m above the ground, with an initial speed of 5.00 m/sec. What is the speed of the rings just before it hits the ground?
A large boulder is ejected vertically upward from a volcano with an initial speed of
40.0 m/sec. Air resistance may be ignored.
a) At what time is it moving at 20.0 m/sec downward?
b) What is the maximum height reached by the boulder?
A rock is dropped from a cliff that is 45 m high. How long does it take to hit the ground?
An astronaut throws a rock directly upwards on the Moon’s surface. How high will the rock reach in 2.0 s? (Acceleration due to gravity on the Moon is 1.6 m/s2)
A clam dropped by a seagull takes 3.0 s to hit the ground. What is the sea gull's height above the ground at the time the clam was dropped?
A small package is attached to a helium-filled balloon rising at 2 m/s. The package drops from the balloon when it is 14 meters above the ground. What is the velocity of the package just before it hits the ground?
A rock was thrown from a bridge over a river. If the rock was released when it was
11.2 m above the water and it took 0.550 s to reach the water, what its velocity when it was released? Was the ball thrown upwards or downwards?
An egg is thrown vertically downward from a window. If the egg was released with a speed of 10.0 m/s and it strikes the ground at a speed of 25.0 m/s, how long did it take the egg to reach the ground?
A ball is kicked straight up from the ground with a speed of 10.0 m/s. How long will the ball be in the air?
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