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WorksheetsRevision: 2.3 Free Fall
Total questions: 10
Worksheet time: 18mins
What is the acceleration of a ball that is dropped off the side of a cliff after 1, 3, 5 seconds? (assume g is rounded to 9.81 m/s2)
4.9, 9.81, 19.62, m/s2
9.81, 19.62, 29.43, m/s2
4.9, 19.62, 39.24 m/s2
9.81, 9.81, 9.81 m/s2
Which would hit the ground first if dropped from the same height in a vacuum—a feather or a metal bolt?
the feather
the metal bolt
They would hit the ground at the same time.
They would be suspended (floating) in a vacuum.
If you throw a baseball straight up, what is its vertical velocity at the highest point?
9.8 m/s2
9.8 m/s
0 m/s2
0 m/s
A ball is thrown upwards and caught when it comes back down at the same height. In the absence of air resistance, the speed of the ball when caught would be
less than the speed it had when thrown upwards.
more than the speed it had when thrown upwards.
the same as the speed it had when thrown upwards.
need more information to determine.
2.45 seconds
4.08 seconds
6.3 seconds
8.15 seconds
1. A durian free falls for 3.5 s from a top of durian tree. What is the height og the durian tree?
60.09 m
34.03 m
As a rock in FREE FALL falls through the air, acceleration
stays constant
decreases until it hits terminal velocity
increases until it hits terminal velocity
increases ~10 m/s each second
Juan is standing on the top observation deck of the Eiffel Tower in Paris at a height of 300 meters. He drops his cell phone. How fast will the phone be traveling when it hits the ground? Ignore the effect of air resistance. (g= 9.81 m s−2 )
9.81 m/s
76.72 m/s
149.76 m/s
46.99 m/s
Heavier objects free fall faster than lighter objects.
True
False
A pumpkin is dropped from a 35 m building. What is its initial velocity?
9.8 m/s
35 m/s
