Time remaining:
The brakes of a car exert a force of 700N to stop it. the car weighs 17345N and

Physics
Tutor: None Selected Time limit: 0 Hours

and moves at 20m/sec. What is the mass of the car? what is the initial momentum of car? what is the change in momentum of car? how long does it take to stop the car?

Mar 18th, 2015

The mass is m = W/g = 17345 N/ 9.81 m/s^2 = 1768 kg.

The initial momentum is p = m v = 1768 * 20 = 35360 kg*m/s. When the car stops, the change is momentum is -35360 kg*m/s.

The time it takes to stop the car is t = p / F = 35360 / 700 = 50 s.

Mar 18th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
Mar 18th, 2015
...
Mar 18th, 2015
Dec 11th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer