What happens if penny is dropped from a height of 20 meters?

It changes direction every 9.8 meters

the force of gravity causes it to accelerate

the falls at a constant velocity

it's mass doubles every second it Falls

A proper cool-down routine includes which of the following?

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Defination of thrust

An object is accelerated by a net force in which direction

How do sound waves travel through a medium?

Which of the two resistors dissipates the larger amount of power?

Three students derive the following equations in which x refers to distance traveled, v the speed, a the acceleration (m/s^2), and t the time, and the subscript (0) means a quantity at time t=0: a) x=vt^2 + 2at, b) x=v0t+1/2at^2, and c) x=v0t+2at^2.

Which is a use of fiber optics?

When a positively charged conductor touches a neutral conductor, the neutral conductor will:

Definition of the rule E=mc^2