When you can’t escape being hit by a fast-moving object, you’ll suffer a smaller force if the collision time is

You’re at rest in a hammock when a hungry mosquito sees you as lunch, while a 2-m/s breeze is blowing. If the mosquito joins you for lunch, it should first hover over you by flying

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