use the equation below to find v, if u = 21, a = 12, and t = 2. v = u+at

Explanation:

Step1: Substitute given values

Substitute $u = 21$, $a = 12$, and $t = 2$ into $v=u + at$. $v=21+12\times2$

Step2: Perform multiplication

First calculate $12\times2$. $12\times2 = 24$ So $v=21 + 24$

Step3: Perform addition

Calculate $21+24$. $v=45$

Answer:

$45$