A cannon consists of a 200-kg cannon and a 5-kg cannonball. The cannonball begins at rest inside the resting cannon prior to launch. After the explosion of powder, the cannonball moves with a velocity of +40 m/s. What is the velocity of the cannon?

In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.

Iwill give 30 points to whoever answers ! what is the formula for actual mechanical advantage and ideal mechanical advantage?

What is the measurement of how fast an object moves relative to a reference point?