A body accelerates uniformly from rest at 2m/s². Calculate it's velocity after traveling 9m.

John Perolski
August 07, 2023

Physics Jamb, Waec, Neco Past Questions & Answers on Speed, Velocity and Acceleration



QUESTIONS 15. A body accelerates uniformly from rest at 2m/s². Calculate it's velocity after traveling 9m.

WA.EC 1988 Ans: 6m/s


SOLUTIONS


Initial velocity u = 0m/s

Acceleration a = 2m/s²

Final velocity v = ?

Distance s = 9m


Applying the third equation of motion


v² = u² + 2as

V² = 0² + 2(2)(9)

V² = 0 + 4 x 9

V² = 36

V = √36

V = 6m/s Answer