TS EAMCET · Physics · Center of Mass Momentum and Collision
A time varying force acts on a ball of mass for . The force versus time curve is shown below. If the initial speed of the ball is , then the speed of ball after is 
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
As we know, impulse = area under F-t graph. Therefore, Impulse=12×2×10-3×20×103=20 kg m s-1 Also, impulse is equal to change in momentum of the particle, ∆p=impulse⇒mv-mu=20⇒v=20m+u=200.1+10=210 m s-1
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