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Which of the following is an example of changing the impulse of a collision?
Question 2 options:


A boxer turning his head while being punched.


A truck smashing into two-layered retaining wall.


Removing mass from a ship before it collides with an iceberg.


A sugar-glider slowing down mid-air before hitting the ground.

Respuesta :

By definition, Momentum = Mass x Velocity.

Let us examine the given statements, and decide whether the impulse of the momentum is either LOWERED, INCREASED, or UNCHANGED.
 
Case 1: A boxer turns his head while being punched.
By turning his head away from the incoming punch, the boxer lowers the
velocity with which the punch is delivered.
Answer: LOWERED

Case 2: A truck smashes into a two-layered retaining wall.
Neither the mass nor the velocity of the truck changes before impact.
Answer: UNCHANGED

Case 3: Mass is removed from a ship before it collides with an iceberg.
By removing mass from the ship, the momentum is lowered.
Answer: LOWERED

Case 4: A sugar-glider slows down in mid-air before hitting the ground.
By lowering the velocity, momentum is lowered.
Answer: LOWERED