A stationary 1000kg cannon fires a 50kg cannonball. The cannonball leaves the cannon at 150m/s and as a result, the cannon recoils at 7.5m/s in the opposite direction. What is the total momentum of the cannon and cannonball after firing?

Which one of the following research methods can show cause and effect

What is the temperature in degrees celsius of a substance with a tempature of 49k

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.