Question

14. A ball projected from ground vertically upward attains
same height at t = 3 s and 1 = 5 s. The speed with
which the ball will fall on the ground is (g = 10 m/s)
(1) 10 m/s
(2) 20 m/s
(3) 30 m/s (4) 40 m/s​

Answer 1

Answer:

At its maximum height, the speed of the ball is: Answer: 0 m/s.

Explanation:

The height of an object thrown upward with an initial velocity of 96 feet per second is given by the formula h = -16t2 + 96t, where t is the time in seconds. The height of an object thrown upward with an initial velocity of 96 feet per second is given by the formula h = −16t2 + 96t, where t is the time in seconds