Posted by **Jim** on Wednesday, March 14, 2007 at 10:30pm.

Another problem I need help with.

An auto race is held on a circular track. A car completes one lap in a time of 20.1 s, with an average tangential speed of 43.1 m/s. Find the following.

The following did not follow.

I apologize for that. Here is the entire question.

An auto race is held on a circular track. A car completes one lap in a time of 20.1 s, with an average tangential speed of 43.1 m/s. Find the following.

(a) the average angular speed in rad/s

(b) the radius of the track in m

a) Divide 2 pi radians (one lap) by 20.1 seconds. The answer will be in radians per second.

b) 43.1 m/s = (circumference)/20.1 s

= 2 pi R /(20.1 s)

R = (43.1 m/s)*20.1 s/(2 pi)= ? m

## Answer this Question

## Related Questions

- Physics - An auto race is held on a circular track. A car completes one lap in a...
- physics help - An auto race is held on a circular track. A car completes one lap...
- physics - A race car completes the final lap of a race on a 2-kilometer circular...
- Physics - A race car completes the final lap of a race on a 2-kilometer circular...
- physics - a racing car completes a lap of a 300 meter circular track in 20 ...
- Physics. - A car starts a race from rest on a circular track and has a ...
- Physics - A race car completes a lap on a 1600 m long track with an average ...
- math - ANGULAR SPEED OF A RACE CAR. A race car is driven around a circular track...
- phsyics - A car races on a circular track of radius r. (a) Write an equation ...
- physics - The combined mass of a race car and its driver is 600. kilograms. ...