Question

Distance travelled by a free falling object in the first second is: a) 4.9m b) 9.8m c) 19.6m d) 10m​

Answer 1

• Time=1s=t
• Acceleration due to gravity=g=9.8m/s^2
• Distance=s

In free fall

$\boxed{\sf s=-\dfrac{1}{2}gt^2}$

$\\ \sf\longmapsto s=-\dfrac{1}{2}\times 9.8(1)^2$

$\\ \sf\longmapsto s=-4.9(1)$

$\\ \sf\longmapsto s=-4.9m$

• Take it positive

$\\ \sf\longmapsto s=4.9m$

• Option a is correct