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1. A car is traveling south at 25 mi/hr (11.4 m/s). A truck having four times...

1. A car is traveling south at 25 mi/hr (11.4 m/s). A truck having four times the mass of the car is traveling east at 50 mi/hr (22.7 m/s). How many times greater is is the trucks kinetic energy compared to the cars kinetic energy? explain your reasoning.

2. A car having a mass of 1900 kg strikes a smooth, rigid post with an initial speed of 8.3 m/s. the sign does not mover but the bumper of the car is pushed back horizontally by a distance of 0.20 m. Determine the average horizontal collision force causing the deformation. please include an energy chart

3. A bowling alley uses a ball feeding mechanism to deliver the bowling ball back to the player. the ball feeding mechanism must exert force on the bowling balls to push them up a 1.20 m long ramp at constant speed. the ramp leads a ball to the chute 0.600 m above the base of the ramp. How much force must be exerted on a 6.00 kg ball? assume friction force is negligible. please include an energy chart.

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