Question 20 Please provide the given and the equation and/or the equations used

Question

Question 20 Please provide the given and the equation and/or the equations used around the post. the sled makes five complete revolutions the minute, find the every force post set the ice. given the sled by the rope. 20. A 1200 kg car is traveling along on a horizontal road at a speed of25.0 m/s, when it comes upon a 30.0 m long, unpaved, sandy stretch of the driver allows the car to coast across this rough patch in the road, the speed of the car decreases to 15.0 m/s. Use ENERGY METHODS to find the magnitude of the average net force exerted on the car in the sandy section. A

Explanation / Answer

According to the given problem,

A negative work is done.

The force acting to decelerate the car acted in the direction opposite to the direction of movement thereby removing energy from the car.

Work = energy

Removing energy is negative work.

W = K.E

1/2mv2 -1/2m u2 = Fnet * D

Fnet = -13500N

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