A 10 kg crate of books is at rest on the floor. A 45 N force is applied to the crate making it accelerate at 2 m/s2. The force of friction between the floor and the crate is Newtons.

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?

Rohit is trying to tune an instrument

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow