Hard
A body starts with an initial velocity of 0 m/s and accelerates uniformly at 5 m/s² for 4 s. Find its final velocity.
Explanation
Explanation
Using v = u + at: v = 0 + (5)(4) = 0 + 20 = 20 m/s.
PRO TIP
Re-check your working by substituting the answer back into the original question.