Homework Help: Physics

Posted by Syafiqa on Saturday, July 17, 2010 at 12:47pm.

What net braking force must be applied to stop a car with a mass of 900 kg initially travelling at a velocity of 100 km/h within a straight-line distance of 50 m?

Physics - drwls, Saturday, July 17, 2010 at 1:30pm
(Braking Force) x distance = Initial Kinetic Energy

Force times distance is work done against friction, which must equal the initial kinetic energy.

Change 100 km/h to m/s before calculating Kinetic Energy

For the Kinetic Energy formula, read my answer to your previous question.

Answer this Question

Related Questions

physics - A 900-kg car is moving at 27.6 m/s. A braking force of -4320 N is ...
physics - A car that weighs 15,000 N is initially moving at 60km/hr when the ...
physics - A car that weighs 15,000 N is initially moving at 60 km/hr when the ...
science - a car of mass 900 kg moves at 10 m/s. what is the braking force ...
physical science - a car of mass 900 kg move at 10 m/s. What is the braking ...
Physics - 6)A 700kg car is travelling at a constant velocity of 35m/s when it ...
physics - A proton is moving at 425 m/s. (a) How much work must be done on it to...
physical science explorations - A car of mass 900 kg moves at 10 m/s. What is ...
Physics - A CAR HAS A MASS OF 1200KG TRAVELLING ON A LEVEL ROAD. THE CAR ...
Physics - A braking system is used to prevent the car travelling faster than 27 ...

For Further Reading

First Name:
School Subject:
Answer: