Question

A drag racer starts from rest and accelerates at 7.4 m/s2. How far will he travel in 2.0 seconds?

Answer 1

Try this solution:

1. rule for this type of movement:

$S=v_0t+\frac{at^2}{2}, \ where \ a-acceleration,S-distance,v-startSpeed,t-time.$

2. according to the rule described above:

$S=0+\frac{7.4*2^2}{2}=7.4*2=14.8(m)$

answer: 14.8 meters.