A child drops a ball from a window. The ball strikes the ground in 3.0 seconds. What is the velocity of the ball the instant before it hits the ground?

A pendulum has a period of 0.500. What is its length?

Dan is gliding on his skateboard at 4.0 m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 8.0 m/s. How fast is Dan going as his feet hit the ground? Dan's mass is 50 kg and the skateboard's mass is 5.0 kg?

Q) How is a conductor different from an insulator. A) A Conductor contains free electrons. B) A conductor contains free protons. C) A conductor contains an equal number of free electrons and free protons.

Examples of rational motion

Why does an object accelerate when it falls toward the earth's surface

Give one word which means the same as 'moving with a negative acceleration '

This is a bond in which a single pair of electrons is shared between a pair of atoms

A hole of radius r is bored through the center of a sphere of radius r. Find the volume v of the remaining portion of the sphere.

What is a sentence for refraction

A stimulus with a low predictive value means that