Is centripetal acceleration always positive?

A small car has a head-on collision with a large truck. Which of the following statements concerning the magnitude of the average force due to the collision is correct? A small car has a head-on collision with a large truck.

What units are used to express energy?

I need to find the amount of force in newtons

A starÍs light is shifted to the red part of the light spectrum. What does this mean about the length of light waves and movement of the star? A. The wavelengths are getting shorter, meaning the star is moving toward the observer. B.

What is the turntable's angular velocity at t = 2.5 s? express your answer to two significant figures and include the appropriate units?

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.