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December 22, 2014

December 22, 2014

Posted by **Sangita** on Saturday, January 22, 2011 at 8:27pm.

the action of two forces. One is a forward

force of 1153 N provided by traction between

the wheels and the road. The other is a 939 N resistive force due to various frictional forces.

How far must the car travel for its speed to

reach 2.0 m/s?

Answer in units of m.

- Physics -
**drwls**, Saturday, January 22, 2011 at 10:51pmOne step at a time.

First compute the net force acting:

F = 1153 - 939 = 214 N

Then compute the acceleration rate a using

F = m a; a = F/m

Then compute the time t required to reach velocity V:

t = V/a

The distance travelled is

X = (1/2) a t^2

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