Question

A body starts sliding on a rough horizontal surface with a speed of 10 m/s. if the
coefficient of friction is 0.2; find the distance traveled by the body before coming to
rest. (g = 10 m/s
A. 15 m
D. 40 m
B. 25 m
E 55 m
C. 35 m​

Answer 1

Answer:

25 m

Explanation:

Given A body starts sliding on a rough horizontal surface with a speed of 10 m/s. if the  coefficient of friction is 0.2; find the distance traveled by the body before coming to  rest.  

Given a body slides on a rough horizontal surface with a speed of 10 m/s. Coefficient of friction is 0.2. We need to find the distance travelled.

We know that by work – energy formula we get

          Now μ m g s = 1/2 m v^2

         Or s = v^2 / 2 μg

                  = 10 x 10 / 2 x 0.2 x 10

                   = 100 / 4

                   = 25 m

So the distance travelled by the body will be 25 m