Calculating Impulse

What impulse is exerted by a 10,000 N rocket that launches across 1.2 seconds?

• 8,300 N s

• 12,000 N s

• 1,019 N s

• None of these.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

What force is exerted on a crash test dummy if it experiences a change in velocity of -40 m/s over a time of 2 seconds. The dummy has a mass of 80 kg.

• 6,400 N

• 1,600 N

• • -1,600 N

• -6,400 N

Tags

NGSS.HS-PS2-1

Which factor is not involved in calculating the impulse of an object?

• Impact Force

• Mass

• Impact Time

• Two or more of these.

How do you calculate impulse?

• Impulse = Energy × Time

• Impulse = Force × Time or Impulse = Change in Momentum

• Impulse = Mass × Velocity

• Impulse = Work × Distance

Tags

NGSS.HS-PS2-2

A 0.2 kg ball is thrown with a velocity of 15 m/s. What is the impulse required to stop the ball?

• 3 Ns

• 0 Ns

• 15 Ns

• 30 Ns

Tags

NGSS.HS-PS2-2

Which of the following best describes impulse?

• The change in velocity of an object

• The change in momentum of an object

• The force applied to an object over a distance

• The energy transferred to an object

Tags

NGSS.HS-PS2-2

How does applying a larger force over a shorter time period affect the impulse delivered to an object?

• It decreases the impulse.

• It increases the impulse.

• It has no effect on the impulse.

• It changes the direction of the impulse.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

How does impulse relate to changes in momentum?

• Impulse is the same as force.

• Impulse decreases momentum.

• Momentum is independent of impulse.

• Impulse is equal to the change in momentum.

Tags

NGSS.HS-PS2-2

A car of mass 1500 kg is moving with a velocity of 20 m/s. What impulse is required to bring the car to a stop?

• 30,000 Ns

• 15,000 Ns

• 3,000 Ns

• 1,500 Ns

Tags

NGSS.HS-PS2-1

If a force of 50 N is applied to an object for 4 seconds, what is the impulse experienced by the object?

• 200 Ns

• 50 Ns

• 4 Ns

• 12.5 Ns