A car is parked on a cliff overlooking the ocean on an incline that makes an ang

Question

A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 19.0° below the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes are defective. The car rolls from rest down the incline with a constant acceleration of 3.06 m/s2 for a distance of 60.0 m to the edge of the cliff, which is 25.0 m above the ocean. (a) Find the car's position relative to the base of the cliff when the car lands in the ocean. 2.3 x Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. m (b) Find the length of time the car is in the air. Enter a number differs from the correct answer by more than 10%. Double check your calculations s Need Help? Read It

Explanation / Answer

since the acceleration is constant and car started from rest

apply v2=u2+ 2 a S(S =60 M

SO v = 19.2m/s

when car leaves the cliff, y component of velocity(downward) = vsin 19

= 6.25m/s
so S in air = 25 m = ut + 1/2 g t2( in downward direction)

t= 1.7 seconds( in air)

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