Mastering Physics: The Impulse Chronicles

A 0.15 kg baseball is struck by a bat and changes its velocity from 20 m/s to the opposite direction at 30 m/s. What is the impulse delivered to the baseball?

• A) 7.5 Ns

• B) -7.5 Ns

• C) 15 Ns

• D) -15 Ns

If a force of 5 N is applied to an object for a duration of 0.2 seconds, what is the impulse experienced by the object?

• A) 0.01 Ns

• B) 1 Ns

• C) 2.5 Ns

• D) 25 Ns

During a collision, a force on a car varies with time. If the maximum force during the collision is 10,000 N and it acts for 0.1 seconds, what is the minimum impulse the car could have experienced?

• A) 100 Ns

• B) 1,000 Ns

• C) 10,000 Ns

• D) 1,000,000 Ns

A soccer ball of mass 0.45 kg is initially at rest and receives an impulse of 2.7 Ns. What is the final velocity of the soccer ball?

• A) 2 m/s

• B) 4 m/s

• C) 6 m/s

• D) 8 m/s

What is the impulse on a 3 kg object that experiences a change in momentum from 9 kg*m/s to 15 kg*m/s?

• A) 6 Ns

• B) 18 Ns

• C) 24 Ns

• D) 45 Ns

A force acts on a 2 kg object for 3 seconds, causing its velocity to change from 4 m/s to 10 m/s. What is the average force exerted on the object?

• A) 2 N

• B) 4 N

• C) 6 N

• D) 8 N

If two objects collide and one experiences an impulse of 5 Ns to the right, what impulse does the other object experience?

• A) 5 Ns to the right

• B) 5 Ns to the left

• C) 0 Ns

• D) Cannot be determined without more information

A 10 kg object moving at 5 m/s comes to a stop in 2 seconds after sliding on a rough surface. What is the impulse exerted by the friction force?

• A) -10 Ns

• B) -25 Ns

• C) -50 Ns

• D) -100 Ns

A tennis ball of mass 0.06 kg is served and its velocity changes from 0 m/s to 30 m/s in 0.05 seconds. What is the average force exerted on the ball?

• A) 9 N

• B) 18 N

• C) 36 N

• D) 60 N

In a perfectly inelastic collision, if the total system momentum before the collision is 100 kg*m/s, what is the total system momentum after the collision?

• A) 0 kg*m/s

• B) 50 kg*m/s

• C) 100 kg*m/s

• D) Cannot be determined without more information