Why a control is needed in a valid experiment

A roller coaster slows as it travels up a hill a) speed b) velocity c) acceleration

If you want to park downhill and there is no curb, which way do you turn your front wheels

Can someone explain the normal force? where does it come from? ... ?

I need a quick way to answer a question on graphs in physics grade12

The product of an emf and a charge moving through it is: A. Power B. Potential C. Force D. Work

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.