Question

A particle moves along a straight line with a uniform acceleration $-5m/s^2$ and initial velocity $12.25/s$ distance traveled by it in $3rd$ second

• A. 0.6725m
• B. zero
• C. 0.25m
• D. 0.75m

Answer 1

The correct option is C 0.25m

Distance travelled in $n^{th}$ second is given by:-

$x_n=(4+an)-\frac{a}{2}$

for $n=3,u=12.25m/s,a=-5m/s^2$

$x_3=(12.25-3\times 5)+\frac{5}{2}=0.25m$