Question

7. The velocity time graph of a ball of mass 3 Kg moving along a straight line on a table is given. What is the acceleration attained by the ball
A.)-5 m/s B). 5 m/s? C).0 D.) 200m/s2​

Answer 1

Answer:

Mass of the body, m=20 g=0.02 kg

From the given graph, we note that

Initial velocity, u=20 m/s=20 m/s

Final velocity, v=0 m/s

Time taken, t=10−0=10s

The force exerted on the ball is,

F=m x a

F=m x (v−u)/t

F=−0.04 N

The negative sign shows that the friction force exerted by the table is opposite to the direction of motion of the ball. Mark it as brainliest answer