Question

A splinter starts from rest and uniformly accelerates at a rate of 2m/s2 for 5.0 seconds. What is his final velocity?

a. 20 m/s

b. 10 m/s

c. 5 m/s

d. 25 m/s

Answer 1

Given:

$v_i=0$

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

$t=5.0\:\rm s$

The final velocity

$$v_f=v_i+at=0+2*5.0=10\:\rm m/s$$

Answer: b. 10 m/s