Leroy who has a mass of 100kg, is skateboarding at 9.0 m/s when he smacks into a brick wall and comes to a dead stop at 2.0 s

show that his acceleration us 45 m/s2

The greater the force squeezing 2 surfaces together, the smaller the friction force. * True False

Discuss whether the kinetic energy or the momentum of the ""bullet"" is more important in causing damage to the bulletproof vest.

If it took Ms. Oldham 37 seconds to lift a 400N (newtons) student up 15m, how much power did she use?

Which is NOT a part of the Kinetic Molecular Theory? A) Atoms are in constant motion B) Gases are more compressible than liquids C) All matter is composed of tiny particles called atoms D) Atoms collide with each other and the walls of their

A toaster is plugged into an 120-volt outlet. If it has a resistance of 460 ohms, how much power does it use? A. 1,800 watts B. 3.8 watts C. 31 watts D. 55,000 watts E. 340 watts

Power=170 watts time=20 seconds

What is the charge of alpha, beta and gamma rays?

A pair of scissors is a complex machine. what simple machines make up a pair of scissors?

Methane gas absorbs red light, and methane clouds reflect blue light, giving Uranus and Neptune their distinctive blue colors. Why do Uranus and Neptune have methane clouds, but Jupiter and Saturn do not

A car traveled 1025 kilometers from El Paso to Dallas in 13.5 hours. What was it's average velocity?