# Which has more momentum, a #7kg# object moving at #8m/s# or a #4kg# object moving at #9m/s#?

The object having a 7kg mass moving with 8m/s velocity has more momentum.

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To calculate momentum, you use the formula: momentum = mass x velocity.

For the first object: momentum = 7 kg * 8 m/s = 56 kg*m/s.

For the second object: momentum = 4 kg * 9 m/s = 36 kg*m/s.

Therefore, the 7kg object moving at 8m/s has more momentum, with a momentum of 56 kg*m/s compared to the 4kg object moving at 9m/s with a momentum of 36 kg*m/s.

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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.

- A ball with a mass of #3 kg # and velocity of #5 m/s# collides with a second ball with a mass of #7 kg# and velocity of #- 2 m/s#. If #25%# of the kinetic energy is lost, what are the final velocities of the balls?
- What does the law of conservation of momentum mean?
- A #3# kilogram object is acted upon by an impulse having a magnitude of #15# #N*s#. What is the magnitude of the object's change in momentum due to this impulse?
- How does conservation of momentum explain how Newton's cradle works?
- How are momentum and impulse calculated?

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