In a scene in an action film, a car with a mass of 2200 kg, travelling at 60.0 km/h [E], collides with a car of mass 1300 kg that is travelling at 30.0 km/h [E], and the two cars lock bumpers. A (a) Calculate the velocity of the vehicles immediately after the perfectly inelastic collision. [ans: 14 m/s [E]]
(b) Calculate the total momentum of the two cars before and after the collision. [ans: 4.8 x 10-kg-m/s]
(c) Determine the decrease in kinetic energy during the collision. [ans: 2.8 x 10^J]

An automobile of mass 2000 kg moving at 30 m/s is braked suddenly with a constant braking force of 10000 n. how far does the car travel before stopping?

The boy of mass 30 kg is at r1= 2 meters from the fulcrum. of the girl is 45 kg, at what r2 must she sit so that they are balanced ?

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.