Author Question: Two objects of different mass are released simultaneously from the top of a 20-m tower and fall to ... (Read 47 times)

kshipps · **on:** Jul 28, 2018

Two objects of different mass are released simultaneously from the top of a 20-m tower and fall to the ground. If air resistance is negligible, which statement best applies?
a. The greater mass hits the ground first.
b. Both objects hit the ground at the same time.
c. The smaller mass hits the ground first.
d. No conclusion can be made with the information given.

Question 2

A rock is thrown straight up with an initial velocity of 24.5 m/s. What time interval elapses between the rock's being thrown and its return to the original launch point? (Acceleration due to gravity is 9.80 m/s2.)
a. 4.00 s
c. 8.00 s
b. 5.00 s
d. 10.0 s