Thursday

July 31, 2014

July 31, 2014

Posted by **Suzy** on Monday, October 10, 2011 at 9:43am.

(a) Find the net work done on the car.

(b) Find the magnitude and direction of the force that does this work. (Assume this force is constant.)

- College Physics -
**bobpursley**, Monday, October 10, 2011 at 9:54ama) net work equals the change in KE.

or, Vf^2=Vi^2+2ad solve for a

then work= force*distance= mass*a*distance.

b) force= ma

- College Physics -
**Kellie**, Monday, October 10, 2011 at 12:19pmI worked out the first equation for part a and found the acceleration to be -0.2304. When doing the second equation, I found work to be -8478.72 J. Can work be negative? I feel like I haven't worked this out correctly.

- College Physics -
**Kellie**, Monday, October 10, 2011 at 12:21pmI feel like the acceleration isn't correct.

**Related Questions**

Physics - The driver of a 1350 kg car, initially traveling at 10.6 m/s, applies ...

physics - The driver of a 1300 kg car, initially traveling at 10.1 m/s, applies ...

Physics - A car is initially travelling at a constant speed of 20 m/s along a ...

Physics - Problem 4- Speedy car, driving at 30 m/s. The driver suddenly ...

Physics - A car mass of 1330 kg is traveling at 28.0 m/s. The driver applies the...

physics - A car of mass 1330 kg is traveling at 28.0 m/s. The driver applies the...

Physics - A car of mass 1550 kg is travelling at 75.0 km/h on a dry horizontal ...

physics - The speed limit in a school zone is 40.0 km/hr. A driver traveling at ...

physics - A car is traveling at Vx =20 m/s. The driver applies the brakes, and ...

physics - Suppose a car is traveling at +22.3 m/s, and the driver sees a traffic...