15. A block is given an initial velocity of 5.00 m/s up a frictionless incline of ar of 20.0°. How far up the incline does the block slide before coming to rest? Answer: 3.73 m

5. A top WNBA player can jump about .7 meters off the ground. If her mass is 50 kg, what force must she exert against the ground? Assume she crouches a distance of .2 metes prior to jumping, and thus the upward force has this distance to act before leaving the ground. 6. A block is given an initial speed of 4 meters per second up the 0 = 22° plane shown below. Ignoring friction, %3D (a) how far up the plane will it go? (b) How much time elapses before it returns to its starting point? R 4m/s s 22°

6. Two packages that start sliding down a 20° ramp from rest a distance d = 4.30 m. For package A: Ma = 5.00 kg and ukA = 0.30. %3D For package B: mB = 7.00 kg and ukB = 0.20. Find the speed of both packages when they reach the bottom. 20°

A child and sled with a combined mass of 32.4 kg slide down a frictionless hill, starting at the top. The sled starts from rest and acquires a speed of 6.9 m/s by the time it reaches the bottom of the hill. What is the height (in m) of the hill?