Question 3 (of 5 10.00 points 1 out of 3 attempts Round your final answer to thr

Question

Question 3 (of 5 10.00 points 1 out of 3 attempts Round your final answer to three significant figures. A 790-kg automobile is moving at 26.5 m/s at a height of 6.3 m above the bottom of a hill when it runs out of gasoline. The car coasts down the hill and then continues coasting up the other side until it comes to rest. Ignoring frictional forces and air resistance, what is the value of h, the highest position the car reaches above the bottom of the hill? 26.5 m/s 6.3 m References eBook & Resources MacBook Air 00 F4 FT F2 F3 FS F6 17

Explanation / Answer

Apply law of conservation of energy

Mgh1 + 1/2Mv1^2 = Mgh2 + 1/2 Mv2^2

v2= 0

gh1+1/2v1^2 = gh2

9.8 × 6.3 + 1/2 ×26.5×26.5 = 9.8 × h2

h2 = 42.13m

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