1. Determine the amount of work done by a gardener that pushes down the handle of a lawnmower at an angle of 54 with an applied force of 128 N, while pushing the mower 6.2 m along level ground.

2. A student and her bicycle have a total mass of 39 kg. At the top of the hill, the girl's speed is 3.4 m/s. The hill is 11 m high and 10 m long. If the force of friction as she slides down the hill is 22 N, determine her speed at the bottom.

3. A 0.42 kg red ball hangs at rest from a spring. The spring is stretched 51 cm from its equilibrium position. When the first red ball is removed, a blue ball is placed on the spring, and it stretches 87 cm from its equilibrium position. What is the second mass?

4. A Hooke's Law spring is compressed 10 cm by an applied force of 60 N. This compressed spring is then used to project a 30 g marble straight up into the air. To what maximum height does the marble rise?

5.Mr. Mouse''s two cats (Abbey and Mika) are playing while he is taking a nap. Mika has a mass of 3.9 kg and is running at 3.9 m/s [S]. Abbey has a mass of 4.3 kg and is stationary prior to the collision. The two cats collide and bounce off of one another. After the collision, Mika is seen moving at 2.5 m/s [E17^oS]. What velocity does Abbey have after the collision?