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=-(1)/(2)gt^2}`

`\\ \sf\longmapsto s=-(1)/(2)* 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