How much energy δ would be required to move the moon from its present orbit around earth to a location that is twice as far away? assume the moon’s orbit around earth is nearly circular and has a radius of 3.84×108 m. δ

A2 kg ball travellng to the right with a speed of 4 m/s collidees with a 5 kg ball traveling to the left with a speed of 3 m/s. take right to be the positive direction. what is the total momentum of the two balls before they collide? what is the total momentum of the two balls after they collide?

Ababy stroller is a rest on top of a hill which is 10 m high. the stroller and baby have a mass of 20 kg. what is the potential energy of the baby and stroller?

What causes the formation of ocean currents?