Question

If a car traveling 40 miles per hour takes 50

feet to stop, then accurate to the nearest
tenth, how many seconds will it take to stop?

Answer 1

t = 0.85 s

Explanation:

Given that,

The speed of a car, v = 40 mph = 17.8816 m/s

Distance, d = 50 feet = 15.24 m

Let the time be t. The formula for speed is given by distance divided by time. So,

`v=(d)/(t)\\\\t=(d)/(v)\\\\t=(15.24 )/(17.8816 )\\\\t=0.85\ s`

So, the required time is 0.85 s.