Author Question: When a ball thrown straight upwards reaches the very top of its path, its acceleration is A) ... (Read 141 times)

JMatthes · **on:** Jul 29, 2018

When a ball thrown straight upwards reaches the very top of its path, its acceleration is

A) zero.
B) 5 m/s2.
C) 10 m/s2.
D) none of the above

Question 2

Neglecting air resistance, how fast must you toss a ball straight up in order for it to take 6 seconds to return to its initial level?

A) 5 m/s
B) 10 m/s
C) 20 m/s
D) 30 m/s
E) more than 30 m/s