Apiece of metal is vibrating with a high frequency. the sound it emits will have a(n)

If a simple machine reduces the strength of a force, what must be increased?

Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? how far will the football travel before it lands?

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.