(5 pts) If the object can reach a speed of 2m/s, what is its kinetic energy? (If you don't have a scaler,
estimate the mass of the object in kg)
KE= | mv2

An alien spaceship is 500 m above the ground and moving at a constant velocity of 150 m/s upwards. how high above the ground is the ship after 5 seconds?

A60-kg box is being pushed a distance of 6.8 m across the floor by a force p with arrow whose magnitude is 162 n. the force p with arrow is parallel to the displacement of the box. the coefficient of kinetic friction is 0.24. determine the work done on the box by each of the four forces that act on the box. be sure to include the proper plus or minus sign for the work done by each force. (the floor is level and horizontal. forces that act on the box: pushing force p, frictional force f, normal force n, and weight mg.)

In an exothermic chemical reaction the energy gained by the surroundings must be the energy lost by the reaction