Tuesday

January 27, 2015

January 27, 2015

Posted by **Jon** on Monday, March 31, 2008 at 3:50pm.

11)A race car travels on a racetrack at 38 m/s and slows at a constant rate to a velocity of 20 m/s over 10 s. How far does it move during this time?

d=Vi(t)+1/2(a)(t^2)

d=38(10)+(1/2)(1.8)(100)

I got 470 meters but my choices are:200,290,380,and 760 so I chose 380

- physics repost -
**bobpursley**, Monday, March 31, 2008 at 4:21pmOn 9) I will be happy to critique your thinking.

on 11) distance while slowing?

average velocity=29

distance=avgvelocity*time....

On your work, a should be negative....

- physics repost -
**Jon**, Monday, March 31, 2008 at 4:28pm9)I multiplied total distance 85 miles times total time of 70 min. and got 1.21 mi/hr

- physics repost typo -
**Jon**, Monday, March 31, 2008 at 4:54pmI divided of course

**Answer this Question**

**Related Questions**

Physics(check) - 9)You are taking a road trip to the beach for Spring Break. You...

Physics - You are taking a road trip to the beach for Spring Break. You leave at...

Math - A semi-truck travels on a paved road for 2 hours at an average speed of ...

physics - You are going for a bike ride. You ride down a straight road at a ...

math - Martin rides to Cambridge 30 miles away from home at the average rate of ...

VNS,Math - A man walked into the road at 4 miles per hour and returned over the ...

Physics - The design of a new road includes a straight stretch that is ...

Physics - Attempting to stop on a slippery road, a car moving at 90 km/h skids ...

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

Physics - A car with a mass of 900 kg moves along a road at a 89 km/hour at ...