Explain how machines can be useful if the output work is always less than the input work

How strong is the Earth's gravity?

Horatio used the flat end of a hammer to remove a nail from a piece of wood. This is an example of using a hammer as an A) Lever B) Lilly C) Inclined plane D) Wheel and axle

Which discovery did Gregor Mendel make

The velocity of a 640-kg auto is changed from 10.0 m/s to 44.0 m/s in 71.0 s by an external, constant force. (a) What is the resulting change in momentum of the car? kg · m/s (b) What is the magnitude of the force? N

How many minutes does light need to travel from the sun to Jupiter?

A racing car's velocity is increased from 44 m/s to 66m/s in 11 seconds. Hsjdjdmaab

A kicker punts a football from the very center of the field to the side line 37 yards down field. What is the displacement of the ball? (A football field is 53 yards wide.

Which factor influencing the distribution of life in the ocean (tides, currents, or waves) is the most influential? Why do you think so?

What is the difference between tangential acceleration and centripetal acceleration?

Differnces of similarities between light and sound