Question

A heavy ball falls freely, starting from rest. Between $t=3s$ and $t=4s$, it travels a distance of : $(g=9.8m/s^2)$

• A. $4.9m$
• B. $9.8m$
• C. $29.4m$
• D. $34.3m$

Answer 1

Answer: (A)

$4.9m$

Given,

$u=0m/s$

$g=9.8m/s^2$

Time interval, $t=4-3=1sec$

2nd equation of motion,

$S=ut+\frac{1}{2}g{t}^2$

$S=0+\frac{1}{2}\times 9.8\times (1{)}^2$

$S=4.9m$

The correct option is A.