The force sensor measures the force on the sensor due to the bumper, but the cart's momentum change ..?
Question 1. The force sensor measures the force on the sensor due to the bumper, but the cart's momentum change arises from the force on the cart due to the bumper. Which of the following facts are needed to assert that the magnitude of these two forces is nearly equal at all times.?
1. Their magnitudes differ by the magnitude of the net force on the bumper.
2. The force of friction is small.
3. The net force on the bumper is small.
4. The cart's weight is canceled by the normal force exerted by the track
Question 2.A cart traveling at 0.3 m/s collides with a stationary object. After the collision, the car 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?
1. It cannot be determined without knowing the mass of the cart.
2. It cannot be determined without knowing the rebound speed of the first collision.
3. The impulses are the same.
4.The first collision.
5.The second collision.
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