Question

3.Velocity versus time graph of a ball of mass 50 g rolling on a concrete floor is shown in the figure below. What will be the frictional force of the floor on the ball? *

Answer 1

Answer:

We know that Acceleration a=  

t

v−u

​  

=  

8−0

0−80

​  

=−10ms  

−2

 

Now, Force=ma

m=50g=  

1000

50

​  

kg

So, F=ma=  

1000

50

​  

×10=0.5N

frictional force oppose the motion, so it is taken as positive with direction opposote to velocity.

Answered By

Explanation: