Question

Sam heaves a shot with weight 16-lb straight upward, giving it a constant upward acceleration from rest of 35.9m/s2 for a height 70.0cm . He releases it at height 2.17m above the ground. You may ignore air resistance.

a) What is the speed of the shot when he releases it?

b) How high above the ground does it go?

c) How much time does he have to get out of its way before it returns to the height of the top of his head, a distance 1.85m above the ground?

Answer 1

a) What is the speed of the shot when he releases it = 7.089m/s

b) How high above the ground does it go = 3.75m

c) How much time does he have to get out of its way before it returns to the height of the top of his head, a distance 1.85m above the ground = 1.49secs

Step-by-step explanation:

The detailed steps and appropriate use of the equations of motion is as shown in the attachment.