Question

Whether a truck comes to a stop by crashing into a haystack or a brick wall, the impulse is:

Answer 1

Answer:

greater with the brick wall

Explanation:

the impulse does not depend whether its  a haystack or a brick wall  because impulse is the products mass and velocity.

Answer 2

Answer:

Both the same.

Explanation:

According to Newton's second law of motion,

Impulse = Change in momentum.

And change in momentum = (momentum before collision) - (momentum after collision)

And for this scenario, whether the car hits the haystack or the brick wall, it is said that the car comes to a stop. That Is, the momentum after collision (which is mass × velocity) is 0 because the final velocity in both cases is 0.

So, the impulse in both cases Is equal to the momentum of the truck before collision.

In both cases,

Impulse = (mass of truck × velocity of truck before collision)