Question

Which of the following statements is TRUE about impulse? (Consider the Impulse-Momentum Theorem: F▲t = m ▲v )

Group of answer choices

Impulse is a force.

Impulse is a vector quantity.

An object which is traveling east would experience a westward directed impulse in a collision.

The Newton is the unit for impulse.

Answer 1

The statement “Impulse is a vector quantity” is true about Impulse.

Answer: Option B

Explanation:

The object’s action by applied force in a particular time interval, there happens changing in momentum called impulse. It is denoted by a symbol ‘J’ or ‘imp’ and expressed in a unit ‘Ns’. As impulse depends on the acted force, when a collision arises from front, behind or side, the force’s direction would be differed.

                   $\text {Impulse }=\text {Force } \times \text {time}=\vec{F} \Delta t$

So, from this option A is false as impulse is not a force but changing momentum. The unit is not Newton, it is Newton second (Ns). The force direction differs (impulse direction) for each cases of collision, so option D also false. Hence, option B seems to be correct. Vector quantity deals with both direction and magnitude and important in motion study.

Answer 2

The statement that is true about Impulse is:

B. “Impulse is a vector quantity” is true about Impulse.

What is Impulse?

The article's activity by applied force in a specific time span, there happens changing in energy called Impulse. It is meant by an image 'J' or 'demon' and communicated in a unit 'Ns'. As motivation relies upon the acted force, when a crash emerges from front, behind or side, the power's course would be contrasted.

Impulse =  Force * change in time

Thus, correct option is B.

Find more information about Impulse here:

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