Question

A car drives off a cliff next to a river at a speed of 30 m/s and lands on the bank on theother side. The road above the cliff is horizontal and 8.3 m above the other shore wherethe car lands. The tires on the car all hit at once and the air resistance is insignificant.How long is the car in the air?

Answer 1

Answer:1.301 s

Step-by-step explanation:

Given

Initial Velocity(u)=30 m/s

Height of cliff=8.3 m

Time taken to cover 8.3 m

`h=ut+(at^2)/(2)`

here Initial vertical velocity is 0

`8.3=(gt^2)/(2)`

`t^2=1.69`

`t=1.301 s`

Horizontal distance

`R=u* t`

`R=30* 1.301=39.04 m`