Which has more momentum, an object with a mass of #3kg# moving at #14m/s# or an object with a mass of #12kg# moving at #6m/s#?

Answer 1

The object with the mass of 12kg has more momentum.

Know that #p=mv#, where p is momentum, v is velocity, and m is mass. Since all the values are in SI units already, there is no need for conversion, and this becomes just a simple problem of multiplication. 1.#p=(3)(14)=42 kg*m/s#

2.#p=(12)(6)=72kg*m/s#

Therefore, the object of m= 12kg has more momentum.

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Answer 2

Parker Abbott

To calculate momentum, you multiply mass by velocity.

For the first object: momentum = mass x velocity = 3 kg x 14 m/s = 42 kgm/s. For the second object: momentum = mass x velocity = 12 kg x 6 m/s = 72 kgm/s.

Therefore, the object with a mass of 12 kg moving at 6 m/s has more momentum, with 72 kgm/s, compared to the object with a mass of 3 kg moving at 14 m/s, with 42 kgm/s.

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Answer from HIX Tutor

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.