Physics, 19.01.2020 04:31 annjetero2oy23ay

Compare these two collisions of a pe student with a wall.
case a: a 75-kg pe student moving at 8 m/s collides with a padded wall and
stops.
case b: the same 75-kg pe student moving at 8 m/s collides with an unpadded
wall and stops
which variable is different for these two cases?
which case involves the greatest momentum change?
which case involves the greatest impulse?
which case involves the greatest force?

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Answer from: am2016832

The variable in the two cases has been time of collision.

The change in momentum in both the cases has been equal.

The impulse in both the cases has been the same.

The greatest force has been applied in case B.

The collision has been described as the contact of one body with another. There has been force of both the body that has been exerted with the collision.

Collision of Student with wall

The collision with padded wall has been softer, and is resulted with the longer duration of the collision. The collision with an unpadded wall has been hard and will be for a short duration of time.

The variable in the two cases has been time of collision.

The change in momentum has been described as the product of mass and velocity. In both the collisions, there has been same mass and velocity of the student.

Thus, the change in momentum in both the cases has been equal.

The impulse has been defined as the force that has been responsible for the collision. The impulse has been equivalent to the change in momentum.

The change in momentum in with the cases has been the same. Thus, the impulse in both the cases has been the same.

The force has been described as the impulse applied per unit time.

The time of collision has been inversely proportional to force. Since, the time of collision has been longer for padded wall in Case A as compared to case B, the force has been smaller for case A.

Thus, the greatest force has been applied in case B.

Learn more about collision, here:

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Compare these two collisions of a pe student with a wall.
case a: a 75-kg pe student moving a...

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