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

Answer 1

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

Linear momentum is defined as the product of the mass and velocity of the object. #p=mv#.

Consider the object which has a mass 7kg and velocity 8m/s with linear momentum '#p_1#' and the other one with 4kg and 9m/s as '#p_2#'.

Now calculate the '#p_1#' and '#p_2#' with above equation and given numericals we get, #p_1=m_1v_1=(7kg)(8m//s)=56kgm//s# and #p_2=m_2v_2=(4kg)(9m//s)=36kgm//s#. #:. p_1 >p_2#

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Answer 2

Amelia Adams

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 kgm/s compared to the 4kg object moving at 9m/s with a momentum of 36 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.