A body starts from rest and moves along a straight line with constant acceleration 2 m/ $s^2.$ The distance travelled by the body during the 5th second of its motion is:
Options

Question

A body starts from rest and moves along a straight line with constant acceleration 2 m/s^2. The distance travelled by the body during the 5th second of its motion is:

G1 Physics · Accepted Answer

Distance travelled in the nth second is s_n = u + (a/2)(2n - 1). Here u = 0, a = 2 m/s^2 and n = 5. Therefore s_5 = (2/2)(9) = 9 m. Hence, option C is correct.