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.

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

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.

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.

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.