Answer:
The gravitational potential energy it had from being above the ground is converted to kinetic energy as the rock falls. As kinetic energy increases, the velocity of the rock will also increase.
Explanation:
Answer:
light is a form of energy produced by a light source. Light is made of photons that travel very fast. Photons of light behave like both waves and particles
Explanation:
Answer:
Part A: 
Part B: 
Part C: 
Explanation:
Part A:
We will use the following kinematics equation:

Part B:
We will use the same kinematics equation:

Part C:
The total time takes is 2t.
So the train moves a distance of

And the car moves a distance in Part A and in Part B:

So the total distance that the car traveled is 
The difference between the train and the car is

Magnets don’t need to touch each other in order to be magnetic because all objects have an attraction however, the closer the magnets get, the more magnetic it is.