Question

The distance travelled by a body started with a velocity of $20m{s}^{-1}$, and moving with an acceleration of 2 $m{s}^{-2}$, in the 8th second in metres:

• A. 35
• B. 20
• C. 120
• D. 10

Answer 1

The correct option is A 35

Using the equations of motion
Distance travelled in n th second is $s=u+\frac{a}{2}(2n-1)$
$s=20+\frac{2}{2}(16-1)$
$s=35m$

Therefore, the distance travelled by the body is 35m.