Thursday

August 28, 2014

August 28, 2014

Posted by **Raequel** on Friday, September 17, 2010 at 11:02pm.

- Physics -
**drwls**, Friday, September 17, 2010 at 11:29pmUse the formula (change in V) = a t

But first you must convert the mi/h (mph) speeds to consistent metric units of m/s.

The 15 mph speed change corresponds to 22 ft/s or 6.71 m/s

(I have always found it convenient to remember that 15 mph is 22 ft/s, and 1 ft/s = 0.3048 m/s, exactly)

Time required = (6.71 m/s)/(0.90 m/s^2) = 7.45 seconds

**Related Questions**

physics - A certain car is capable of accelerating at a rate of 0.57 m/s^2.How ...

physics - A certain car is capable of accelerating at a rate of + 0.80 m/s2. How...

physics - A certain car is capable of accelerating at a rate of + 0.30 m/s2. How...

physics - A certain car is capable of accelerating at a rate of 0.59 m/s2. How ...

physics - A certain car is capable of accelerating at a rate of +0.60 m/s2. How ...

physics - A certain car is capable of accelerating at a rate of +0.90 m/s2. How ...

physics - A certain car is capable of accelerating at a rate of +0.50 m/s2. How ...

physics - A certain car is capable of accelerating at a rate of +0.90 m/s2. How ...

Science - A certain car is capable of accelerating at a rate of + 0.60 m/s^2. ...

physics - A certain car is capable of accelerating at a uniform rate of 0.84 m/s...