Ex 3) A tennis player lobs the tennis ball up in the air during a serve at a rate 3 m/s. How long will it take the tennis ball to reach its maximum height?

Which of the following changes will result in a stronger electromagnet? a. using fewer coils of wire b. using a higher voltage c. using a shorter nail d. using a longer wire

Arrange the images in order to show how lake-effect snow occurs.

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?