A jet takes off from an aircraft carrier starting from rest and travels 93 m [fwd] in 1.2 s when being pushed by the catapult. What is its final velocity at takeoff?

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

Explain why electric current cannot exist if a current doesn't have a voltage source.