Momentum, Collisions, and Impulse

What is momentum?

• The quantity of motion posessed by a system due to its mass and velocity

• The rate at which a system is displaced from its equilibrium position over time

• The vector sum of the forces acting on a system

• The rate at which the velocity of a system changes over time

Tags

NGSS.HS-PS2-2

What is the formula for calculating the momentum of a particle?

Tags

NGSS.HS-PS2-2

Match the following

• Velocity

• Mass

• Momentum

Tags

NGSS.HS-PS2-2

• +33.75 kg · m/s

• +34 kg · m/s

• -33.75 kg · m/s

• -34 kg · m/s

• -34 m/s

Tags

NGSS.HS-PS2-2

At the start of its motion, an object is traveling upwards with a velocity of +15 m/s. It goes on to experience a net of acceleration of -9.8 m/s/s. What is the direction of the object's momentum at the start of its motion? Implement a coordinate system in which upwards is the positive direction vertically and rightwards is the positive direction horizontally.

• Upwards because the direction of the momentum vector depends on the direction of the velocity vector

• Upwards because the direction of the momentum vector depends on the direction of the acceleration vector

• Downwards because the direction of the momentum vector depends on the direction of the velocity vector

• Downwards because the direction of the momentum vector depends on the direction of the acceleration vector

Tags

NGSS.HS-PS2-2

Consider two objects called A and B. Object A has a mass of 15 kg and a horizontal velocity of +7.6 m/s. Object B has a mass of 12 kg and a horizontal velocity of +7.6 m/s. How do the momenta of the two objects compare to each other? Implement a coordinate system in which rightwards is the positive direction.

• Objects A and B have the exact same momentum

• Objects A and B have momenta that are the same in magnitude but opposite in direction

• Object A has more momentum than Object B because Object A has more mass

• Object A has more momentum than Object B because Object A has a greater velocity

• Object B has more momentum than Object A because Object B has less mass

Tags

NGSS.HS-PS2-2

Consider two objects called A and B. Object A has a mass of 15 kg and a horizontal velocity of +7.6 m/s. Object B has a mass of 15 kg and a horizontal velocity of +18.3 m/s. How do the momenta of the two objects compare to each other? Implement a coordinate system in which rightwards is the positive direction.

• Objects A and B have the exact same momentum

• Objects A and B have momenta that are the same in magnitude but opposite in direction

• Object A has more momentum than Object B because Object A has more mass

• Object B has more momentum than Object A because Object B has a greater velocity

• Object B has more momentum than Object A because Object B has less mass

Tags

NGSS.HS-PS2-2

• +22.5 kg · m/s

• +22 kg · m/s

• +23 kg · m/s

• +38.9 kg · m/s

• +39 kg · m/s

• +22.5 kg · m/s

• +22 kg · m/s

• +38.9 kg · m/s

• +38 kg · m/s

• +39 kg · m/s

Tags

NGSS.HS-PS2-2

• +5.23 kg · m/s

• +12.6 kg · m/s

• +39.3 kg · m/s

• +16.4 kg · m/s

• +39 kg · m/s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2