Question

In: Physics

The same cart again traveling at 0.3 m/s collides with a different stationary object. This time the cart is at rest after the collision. In which collision is the impulse on the cart greater?

A cart traveling at 0.3 m/s collides with stationary object. After the collision, the cart rebounds in the opposite direction. The same cart again traveling at 0.3 m/s collides with a different stationary object. This time the cart is at rest after the collision. In which collision is the impulse on the cart greater?
  • A. The impulses are the same.
  • B. The second collision.
  • C. The first collision.
  • D. Cannot be determined without knowing the mass of the cart.
  • E. Cannot be determined without knowing the rebound speed of the first collision.

 

Solutions

Expert Solution

A cart traveling at 0.3 m/s collides with a stationary object.
After the collision, the cart rebounds in the opposite direction.
The impulse in the first collision is I = Δp
                                            = m v - ( mu )
                                            = 2 m u
cart again collides with a different stationary object with a speed of 0.3 m/s.
The impulse in the second collision is I = mu
so the answer is option C
In the first collision, the impulse is greater.

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