# The mass of each car is 600kg, 970kg, 230kg, 810kg, 660kg. The force of friction on each car is 1980N, 3201N, 759N, 2673N, 2178N respectively. What is the magnitude of the backward forces on the 2nd car?

I might be misreading the question, but I would answer 3201N.

Other than the specified friction forces, I have no reason to believe that the car is subject to any additional backward forces.

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The magnitude of the backward force on the 2nd car is 3201N.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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- Which object has more inertia — a bowiing ball or a tennis ball?

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