Question

An automobile with an initial velocity of 7.25 m/s accelerates at the rate of 4.0 m/s squared. What is the final velocity after 9.5 seconds?

Answer 1

Given:

$v_i=7.25\;\rm m/s$

$a=4.0\:\rm m/s^2$

$t=9.5\:\rm s$

The final velocity

$$v_f=v_i+at=7.25+4.0*9.5=45\:\rm m/s$$