A car with a mass of 650 kg is moving with a speed of 20m/s. Calculate the kinetic energy of the car?

How does friction affect brick structures

When ice melts, it changes from solid to liquid. Explain why this is not a chemical change. A) Because water can also boil. B) Because water is a compound and not a chemical. C) Because it does not matter how much ice you use.

Consider the following wave function in SI units: ΔP (x, t) = (24.0 / r) sin (1.35r - 2050t) Include answers to such questions as the following and give representative values for any quantities that can be evaluated.

If a ball dropped from a tower reaches the ground after 3.5 seconds, what is the height of the tower? Given: g = - 9.8 meters/second2

A child whose weight is 228 N slides down a 4.10 m playground slide that makes an angle of 44.0° with the horizontal. The coefficient of kinetic friction between slide and child is 0.0720.

What is the difference between meteors and meteorites?

The puzzle box is traditionally associated with the work of

A 0.95-kg sample of water at 11°C is in a calorimeter. You drop a piece of steel with a mass of 0.39 kg at 212°C into it.

Let the magnitudes of two displacement vectors be 4 m and 8 m, respectively. If the two vectors are added, the magnitude of the resultant vector. A. is exactly equal to 4 m. B. is exactly equal to 12 m. C. is greater than 12 m. D.

justin pushes basket of toys with 50N of force for 3 meters in 100 seconds. how much work did he do on the basket