The speed of a bullet fired from a gun will be about the same as the speed of the recoiling gun

A space probe in remote outer space continues moving

A crate is at rest on a horizontal floor, with nobody pushing. The friction force acting on the crate is

A block of ice sliding down an incline has one-quarter its maximum potential energy

When you push a crate across a level floor at constant velocity, friction between the crate and the floor is

The speeds of the planets about the Sun depend on

The planet Jupiter takes a longer time to travel around the Sun than Earth because Jupiter

A bucket of cement is raised by a rope at constant speed at a construction site. Compared with the force of gravity on the bucket, the upward force supplied by the rope is

Minimal orbit speed about Earth is about 8 km/s. Minimal orbital speed for a satellite about Jupiter would be

Driving along the road at 100 km/h, Reckless Rick runs into Hapless Harry, who is directly in front of him and is driving at 74 km/h.  What is the impact speed–that is, the speed at which the two vehicles are approaching each other just before the collision?