Question

The ratio of velocities acquired by a freely falling body starting from rest at the end of 1 second and 2 seconds is ___________.

• A. 1:2
• B. 2:1
• C. 1:4
• D. 4:1

Answer 1

The correct option is A 1:2

Initial velocity $u=0m/s$

Using $v=u+gt$

For $t=1s$

$\therefore$ $v_1=0+g\times 1=g$

For $t=2s$

$\therefore$ $v_2=0+g\left(2\right)=2g$

Thus $v_1:v_2=1:2$