# Question

A 1200-kg automobile travels at 90 km/h.

(a) What is its kinetic energy?

(b) What net work would be required to bring it to a stop?

(a) What is its kinetic energy?

(b) What net work would be required to bring it to a stop?

## Answer to relevant Questions

A constant net force of 75 N acts on an object initially at rest as it moves through a parallel distance of 0.60 m. (a) What is the final kinetic energy of the object? (b) If the object has a mass of 0.20 kg, what is its ...If the work required to speed up a car from 10 km/h to 20 km/h is 5.0 x 103 J, what would be the work required to increase the car’s speed from 20 km/h to 30 km/h? A horizontal spring, resting on a frictionless tabletop, is stretched 15 cm from its unstretched configuration and a 1.00-kg mass is attached to it. The system is released from rest. A fraction of a second later, the spring ...Suppose the coefficient of kinetic friction between the block and the plane in Exercise 4 is 0.275. What would be the net work done in this case? In exercise A 3.00-kg block slides down a frictionless plane inclined to the ...A vertical spring with a force constant of is compressed 6.0 cm and a 0.25-kg ball placed on top. The spring is released and the ball flies vertically upward. How high does the ball go?Post your question

0