Question
A $1500-\mathrm{kg}$ car accelerates from 0 to $25 \mathrm{~m} / \mathrm{s}$ in $7.0 \mathrm{~s}$ What is the average power delivered by the engine $(1 \mathrm{hp}=746 \mathrm{~W}) ?$a) $60 \mathrm{hp}$c) $80 \mathrm{hp}$e) $180 \mathrm{hp}$b) $70 \mathrm{hp}$d) $90 \mathrm{hp}$
Step 1
The time taken for this change in velocity is $7.0 \, \mathrm{s}$. We are asked to find the average power delivered by the engine. We know that power is equal to work done divided by time. Show more…
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A $1500-\mathrm{kg}$ car accelerates from 0 to $25 \mathrm{~m} / \mathrm{s}$ in $7.0 \mathrm{~s}$. What is the average power delivered by the engine $(1 \mathrm{hp}=746 \mathrm{~W}) ?$ a) $60 \mathrm{hp}$ b) $70 \mathrm{hp}$ c) $80 \mathrm{hp}$ d) $90 \mathrm{hp}$ e) $180 \mathrm{hp}$
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