What are the effects of the force while making high jump by an athlete?

Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. when the carts collide, they hook together. assume that positive momentum is to the right. which graph best represents the momentum of both carts over time, before and after the collision?

The built in flash in a compact camera is usally capable of giving correct exsposure for distance up to how many meters?

Why are nonmetals more likely to react with eachother by sharing electrons