Question

For problems 2-3, a Ferrari accelerates from 0-60.0 miles per hour in 2.50 seconds.

Answer 1

Answer:

Explanation:

The first part of this question is simply asking us to convert the speed from miles per hour to meters per second:

$60.0\frac{mi}{hr}*\frac{1hr}{3600sec}*\frac{1609.34m}{1mi}=26.8\frac{m}{s}$ choice C.

The next part wants us to use the equation for acceleration and find the acceleration:

$a=\frac{v-v_0}{t}$ where v is final velocity, v0 is initial velocity, and t is time in seconds (which was one of the reasons we had to convert the initial velocity from 60.0 mph to m/s):

$a=\frac{26.8-0}{2.5}$ and

a = 10.7 m/s/s, choice B.