The kinetic energy of a 1000-kg roller coaster car that is moving with a speed of 20.0 m/s.

A truck is using a hook to tow a car whose mass is one quarter that of the truck. If the force exerted by the truck on the car is 6000 N, then the force exerted by the car on is truck is

If a car crashes into a wall, the wall puts a force on the car. The car puts an equal force on the wall. What does each force do?

According to electronegativity difference, what type of bond are oxygen and hydrogen most likely to form? ionic covalent

3. A 3.0 * 10-3 kg copper penny drops a distance of 50.0 m to the ground. If 65 percent of the initial potential energy goes into increasing the internal energy of the penny, determine the magnitude of that increase.

Two buildings on down town mall each have a mass of 26000000 kg and as separated by 550 m from center of mass what is the force of attraction between them

Which statement is true about the atom? A: it contains positive electrons, uncharged protons and negative protons. B: it contains uncharged neutrons, positive electrons and negative protons.

Steel objects can become temporary magnets because they are mainly composed of which element?

How long does it takes the sun to rotate the earth?

Which explains how winds move?

Why is it important to develop alternative energy sources