Question

Coach Reid drops a 10 pound weight near a sleeping student. If the weight falls for 4.48

seconds. What is the velocity of the weight just before it hits the floor?

Answer 1

The velocity of the weight just before it hits the floor is 43.904 m/s

Step-by-step explanation:

Free Fall of Objects

If an object is dropped from rest in free air, it falls with a constant acceleration called the acceleration of gravity, which value is g = 9.8 m/s^2

The final velocity of a free-falling object after a time t is given by:

`v_f=g.t`

Note this equation does not depend on the weight of the object. We know the weight falls by t=4.48 seconds, thus:

`v_f=9.8\ m/s^2\cdot 4.48\ s`

`v_f=43.904\ m/s`

The velocity of the weight just before it hits the floor is 43.904 m/s