Understanding Impulse and Momentum

What is the relationship between impulse and momentum as described in the passage?

• Impulse is the product of force and time, and it equals the change in momentum.

• Impulse is the sum of force and time, and it equals the change in momentum.

• Impulse is the difference between force and time, and it equals the change in momentum.

• Impulse is the ratio of force to time, and it equals the change in momentum.

How does the impulse-momentum theorem apply to car safety features like airbags?

• Airbags increase the time over which momentum is brought to zero, reducing the force experienced.

• Airbags decrease the time over which momentum is brought to zero, increasing the force experienced.

• Airbags maintain the time over which momentum is brought to zero, keeping the force constant.

• Airbags have no effect on the time over which momentum is brought to zero.

What is the unit of impulse as mentioned in the passage?

• Newton-seconds (N•s) or kilogram-meters per second (kg•m/s)

• Joules (J) or Watts (W)

• Meters per second squared (m/s²)

• Kilograms (kg)

In the context of the passage, how do crumple zones in cars help during a collision?

• They absorb impact and extend collision time, reducing force experienced by occupants.

• They increase the speed of collision, increasing the force experienced by occupants.

• They decrease the time of collision, increasing the force experienced by occupants.

• They have no effect on the collision time or force experienced.

According to the passage, how do athletes use the impulse-momentum theorem in sports?

• Athletes extend the time of impact to reduce force, such as by following through with swings.

• Athletes shorten the time of impact to increase force, such as by stopping abruptly.

• Athletes ignore the time of impact as it has no effect on force.

• Athletes use the impulse-momentum theorem to increase their speed.