The average force exerted

A car’s bumper is designed to withstand a 25.65 m/s collision with an immovable object without damage to the body of the car. The bumper cushions the shock by absorbing the force over a distance. Calculate the magnitude of the average force (in unit of N) on a bumper that collapses 0.12 m while bringing a 1,775.97-kg car to rest from an initial speed of 25.65 m/s. Your answer could be a large number between several thousands to hundreds of thousands. Just put in the raw number, for example, 123456.7

The same constant force is used to accelerate two caritos of equal masses, initially at rest on a horizontal surface without friction. The force is applied to cart A for twice as long as the duration applied to cart B. The work done on body A is WA; and the one performed on B is WB. Which of the following statements is correct? a) WA = WB b) WA = WB c) WA = 2 WB d) WA = 4 WB e) WB = 2WA

A car's bumper is designed to withstand a 4.32 km/h (1.2 m/s) collision with an immovable object without damage to the body of the car. The bumper cushions the shock by absorbing the force over a distance. Calculate the magnitude of the average force (in N) on a bumper that collapses 0.225 m while bringing a 800 kg car to rest from an initial speed of 1.2 m/s. (Enter a number.) N

(a) The Eskimo pushes the same 50.0-kg sled over level ground with a force of 1.70 × 102 N exerted horizontally, moving it a distance of 5.90 m over new terrain. If the net work done on the sled is 2.90 x 102 J find the coefficient of kinetic friction. (b) Repeat the exercise with the same data, finding the coefficient of kinetic friction, but assume the applied force is upwards at a 40.0° angle with the horizontal.

A car's bumper is designed to withstand a 6.48 km/h (1.8 m/s) collision with an immovable object without damage to the body of the car. The bumper cushions the shock by absorbing the force over a distance. Calculate the magnitude of the average force (in N) on a bumper that collapses 0.285 m while bringing a 860 kg car to rest from an initial speed of 1.8 m/s. (Enter a number.) N

Is the work done by the applied force positive or negative when a heavy body is lowered to the ground?

A rickshaw puller pulls the rickshaw by applying a force of 160 N. If the rickaw moves with constant velocity of 108 km/h-1. Find the power of rickshaw puller ?-

Work done by Abby and Robert so the car can move as far as 4 meters. Forces exerted by Abby and Robert are 45N and 75N.

A car's bumper is designed to withstand a 7.20 km/h (2.0 m/s) collision with an immovable object without damage to the body of the car. The bumper cushions the shock by absorbing the force over a distance. Calculate the magnitude of the average force (in N) on a bumper that collapses 0.240 m while bringing a 870 kg car to rest from an initial speed of 2.0 m/s. (Enter a number.)