Wednesday

April 16, 2014

April 16, 2014

Posted by **Miaow** on Sunday, September 2, 2012 at 11:58am.

A commuter backs her car out of her garage with an acceleration of 1.40 m/s2. (a) How long does it take her to reach a speed of 2.00 m/s? (b) If she then brakes to a stop in 0.800 s, what is her deceleration?

a.) V=Vo+at

2.00 m/s = 0 + 1.40 m/s^2t

t = 1.43 seconds

b.) acceleration = v/t

acceleration = (2.00 m/s)/8 s

deceleration = .25 m/s^2

- Physics -
**Henry**, Tuesday, September 4, 2012 at 4:40pma. Correct!

b. Dec. = (Vf-Vo)/t=(0-2) / 0.8=-2.5 m/s^2.

NOTE: Deceleration is always negative.

**Related Questions**

Algebra - Would someone please check these answers? Simplify. 3/x-5+1/1-4/x-5 ...

Math (Algebra) - Can someone please check my answer? 9[73-(-95-61)]= 2061 if my ...

alegbra - Check this problem for me do I have negative sign right with the ...

alegbra - Check this problem for me do I have negative sign right with the ...

Algebra Can someone who is serious respond - Can someone check my answer please...

Physics;Help!!!!!! - There is apparently no one online who can help with physics...

Math check my answers - I posted this before can someone please check my answers...

Pre-Calculus/Trig Check please and help - Could someone please check the first ...

FRENCH WORK ASAP - please please someone check my work I don't understand it ...

math - The function f(x)=2x+8/3x-7 is one to one. Find its inverse, and check ...