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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?

Respuesta :

Answer:1.301 s

Explanation:

Given

Initial Velocity(u)=30 m/s

Height of cliff=8.3 m

Time taken to cover 8.3 m

[tex]h=ut+\frac{at^2}{2}[/tex]

here Initial vertical velocity is 0

[tex]8.3=\frac{gt^2}{2}[/tex]

[tex]t^2=1.69[/tex]

[tex]t=1.301 s[/tex]

Horizontal distance

[tex]R=u\times t[/tex]

[tex]R=30\times 1.301=39.04 m[/tex]

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