Physics Momentum and Impulse

Why is it necessary to analyze the impulse and momentum of objects involved in collisions?

• To admire the beauty of physics

• To confuse students

• To make the calculations more complicated

• To understand the forces, changes in momentum, and predict collision outcomes.

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-3

Provide a real-life application where momentum plays a crucial role.

• Baseball pitching

• Swimming strokes

• Basketball dribbling

• Soccer goalkeeping

Tags

NGSS.HS-PS2-2

If an object has a momentum of 50 kg m/s before a collision, what will be its momentum after the collision if it remains unchanged?

• 25 kg m/s

• 50 kg m/s

• 75 kg m/s

• 100 kg m/s

Tags

NGSS.HS-PS2-2

A car with a momentum of 3000 kg m/s collides with a stationary car. What is the total momentum after the collision?

• 3000 kg m/s

• 1500 kg m/s

• 4000 kg m/s

• 2000 kg m/s

Tags

NGSS.HS-PS2-2

How can momentum be used to improve the safety features of vehicles?

• By increasing the mass of the vehicle to enhance stability and resistance to sudden changes.

• By removing safety features to allow for faster acceleration.

• By decreasing the size of the vehicle to improve maneuverability.

• By reducing the mass of the vehicle to increase agility and responsiveness.

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-3

Calculate the momentum of a truck weighing 5000 kg moving at a speed of 20 m/s.

• 2000 kg*m/s

• 25000 kg*m/s

• 40000 kg*m/s

• 100000 kg*m/s

Tags

NGSS.HS-PS2-2

Describe a situation where impulse is crucial in ensuring a safe collision.

• Applying the brakes with the right amount of force and timing to reduce speed and change direction.

• Ignoring the collision and not taking any evasive action

• Closing your eyes and hoping for the best

• Speeding up to increase impact force

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

A 3 kg ball is dropped onto a concrete floor. What is the magnitude of the ball’s change in momentum if its speed just before striking the floor is 7 m/s and its rebound speed is 3 m/s?

• 10 kg-m/s

• 15 kg-m/s

• 30 kg-m/s

• 60 kg-m/s

Tags

NGSS.HS-PS2-2

A hockey stick strikes a 0.50 kg puck and is in contact with the puck for t = 0.050s. The puck travels in a straight line as it approaches and leaves the hockey stick after it is struck. The puck arrives at the stick with a velocity of 6.4 m/s and leaves with a velocity of -3.6 m/s. What is the magnitude of the change in momentum of the puck?

• 2 kg-m/s

• 3 kg-m/s

• 10 kg-m/s

• 5 kg-m/s

Tags

NGSS.HS-PS2-1

A hockey stick strikes a 0.50 kg puck and is in contact with the puck for t = 0.050s. The puck travels in a straight line as it approaches and leaves the hockey stick after it is struck. The puck arrives at the stick with a velocity of 6.4 m/s and leaves with a velocity of -3.6 m/s. What is the magnitude of the average force acting on the puck?

• 100 N

• 150 N

• 200 N

• 300 N

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2