An object experiences a force of 17.47N for a time period of 2.04s what is the impulse on the object

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted

Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest which is 21h (heavy hydrogen, m = 2.01 u).

Which body is in equilibrium? (1) a satellite orbiting earth in a circular orbit (2) a ball falling freely toward the surface of earth (3) a car moving with a constant speed along a straight, level road (4) a projectile at the highest point in its trajectory