A 2kg ball moving at 7m/s is caught by a 70kg man while standing on ice. How fast will the man/ ball combination be moving after the ball is caught by the man

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Asmall 21 kilogram canoe is floating downriver at a speed of 1 m/s. what is the canoe's kinetic energy?

Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)