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  • Velocity versus time graph of a ball of mass 50 g rolling on a concrete floor is shown in Fig. 9.1. Calculate the acceleration and frictional force of the floor on the ball.

The velocity versus time graph of a ball of mass 50 g rolling on a concrete floor is shown in Fig. 9.1. Calculate the acceleration and frictional force of the floor on the ball.

Answers (1)

Explanation:-

If we observe the graph, the speed of the ball decreases from = 80 m/s to 0 m/s

t=  8 seconds.

We know that acceleration is the rate of change of velocity. It can be calculated as the ratio of change in velocity and time.

Therefore, 

a= 10 m/s2 (This acceleration is caused by the force of friction)

By Newton’s second law, we know that

F = Ma.

The mass of the ball is 50 g = 0.05 kg.

By putting the value of mass and acceleration, we will get that the friction force will be equal to 0.5 N.

 

Posted by

Gurleen Kaur

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