Question

Help.. Im confused.. A student is preparing a wooden car for a toy-car derby. Position 1 on the racetrack profile shows the starting position for the car. When a signal is given, the flat part of the ramp at position 1 tips up, and the car travels down the track. When it gets to it's position 4, the car collides with a wooden block, and pushes it along the track. Question: What will happen when the car hits the wooden block? A: The energy of the car will increase, and the energy of the block will decrease B: The energy of the car will be the same as the energy of the block C: The energy of both the car and the block will increase. D: The energy of the car will decrease, and the energy of the block will increase. Please help me.

Answer 1

Answer:

The correct option is D) The energy of the car will decrease, and the energy of the block will increase.

Explanation:

As we know energy cannot be created or destroyed but it can change from one form to another. When the wooden car will collide with the wooden block, some of the kinetic energy with which the car was moving will be passed to the wooden block. As a result, the wooden block will also get pushed along the track. Meanwhile, as the wooden car had transferred some of its energy, its energy level will decrease and it will move slower than before pushing the wooden block along with it.