Question

The velocity
of a ball
of mass 100g
changes from 20 m/s in time 2 sec
Find the change in momentum
and hence the force
acting
on the ball​

Answer 1

Answer:

2. 5

Step-by-step explanation:

hundreds of mass must me divided by 20 m / s and then divide by 2 sec

Answer 2

Answer:

answer -

Step-by-step explanation:

retardation a is calculated by using the formula

v = u - a×t with final speed v = 0 ;

a = v/t = 20/0.02 = 1000 m/s²

force exerted on the ball = mass x retardation = 100 × 10 ³ x 1000 = 100 N