Friday

April 18, 2014

April 18, 2014

Posted by **Shaila** on Monday, October 4, 2010 at 8:41am.

- Physics -
**drwls**, Monday, October 4, 2010 at 12:40pmFirst solve for the speed of the cars locked together, V', using the fact that the kinetic energy lost equals work done against friction during the skid.

(1/2)(M+m)V'^2 = (M+m)(Uk)*g*X

V'^2 = 2*0.750*9.8*4.58 = 63.3 m/s^2

Then apply conservation of momentum to determine the speed of the faster car that caused the collision, V.

M V = (M+m)*V'

Solve for V

**Related Questions**

Physics - A car is being driven along a country road on a dark and rainy night ...

physics - The speed limit in a school zone is 38 km/h. A driver traveling at ...

Physics - a driver sees a horse on the road and applies the brakes so hard that ...

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

physics - The driver of a car, traveling at a constant 25 m/s, sees a child ...

physics - A driver in a car traveling at a speed of 55.3 mi/h sees a deer 108 m ...

Physics - A driver in a car traveling at a speed of 56.0 mi/h sees a deer 116 m ...

Physics - A driver in a car traveling at a speed of 56.0 mi/h sees a deer 116 m ...

physics - A driver in a car traveling at a speed of 70 mi/h sees a deer 90 m ...

physics - The driver of the car traveling at a constant 25m/s sees a child ...