Question

A skier starts from rest and slides 9.0 m down a slope in 3.0 s. Assuming constant acceleration, in

what time after starting will the skier acquire a speed of 24 ms?

Answer 1

3 seconds

Step-by-step explanation:

initial velocity = 0ms

final velocity = 24ms

time(1) = 3s

acceleration = ?

time (2) =?

solution:-

to find acceleration,

a =( vf - vi ) / t

= 24-0 /3

= 24/ 3

a= 8ms^-2

To find time(2)

t= (vf - vi )/ a

= 24- 0 / 8

= 24/ 8

= 3seconds