Question

1. what happens to the cars kinetic energy as it rolls down the ramp? the kinetic energy of the toy car increases because the speed of the toy car increases. the kinetic energy of the toy car increases because the mass of the toy car increases. the kinetic energy of the toy car decreases because the height of the ramp decreases. the kinetic energy of the toy car decreases because the mass of the toy car decreases.

Explanation:

Kinetic energy formula is \(KE=\frac{1}{2}mv^{2}\), where \(m\) is mass and \(v\) is velocity. As the car rolls down the ramp, its speed (\(v\)) increases. Mass (\(m\)) of the car remains constant during the motion down the ramp. Height of the ramp is related to potential energy (\(PE = mgh\)), not directly to the change in kinetic energy in the way described in the wrong options.

Answer:

The kinetic energy of the toy car increases because the speed of the toy car increases.