A sports car and a minivan run out of gas and are pushed to the side of the road. Which is easier to push, and why?
Answer
A
the minivan, because it has more mass and therefore more inertia
B
the minivan, because it has less mass and therefore less inertia
C
the sports car, because it has more mass and therefore more inertia
D
the sports car, because it has less mass and therefore less inertia
Explanation
The sports car is generally easier to push because it has less mass than the minivan. Less mass means less inertia, so it takes less force to get the car moving. Choice D correctly connects the sports car’s lower mass with its lower inertia.
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