Momentum
Momentum Conservation
Calculating
Momentum
Momentum
Δ Momentum
Impulse
100
The letter for momentum is ____________
p
100
Two objects collide and bounce off each other, is this true for perfectly elastic or inelastic perfectly collisions, or both?
Elastic
100
What is the momentum of a 60-kg car moving eastward at 9 m/s.
540 kg*m/s, east
100
What is the equation for change in momentum?
\Delta p = m\Delta v
100
What is the symbol for impulse?
J
200
Momentum is a ______________ quantity with both magnitude and direction.
vector
200
True/False
For any collision occurring in an system, momentum is conserved.
True
200
Momentum of a 1000-kg car moving at 20 m/s NE.
20,000 kg*m/s NE
200
Which case has the greatest velocity change?
Case B
The velocity changes from +30 m/s to -28 m/s. This is a change of 58 m/s (-) and is greater than in case A (-15 m/s).
200
What is the equation for impulse?
J=F*\Delta t
300
p=m*?
Velocity
300
A large truck collides with a small bicycle.
Which vehicle experiences the greatest force of impact?
Both have the same
300
A car possesses 20,000 kg*m/s. What would be the car's new momentum if the velocity doubled?
40,000 kg*m/s
300
Which case has the biggest momentum change?
Case B,
momentum change depends on velocity change
300
How is impulse related to momentum?
J=F*\Delta t = \Delta p = m \Delta v
400
True/False
An object's momentum is indirectly proportional to an object's velocity (as one increases, the other decreases)
False
400
A large truck collides with a small bicycle.
Which vehicle experiences the largest change in momentum?
Both change momentum the SAME amount! (one increases momentum, other decreases by the same)
400
A car possesses 20 000 kg*m/s. What would be the car's new momentum if it brakes, applying a force of 100N over 10s.
19,000 kg*m/s
400
Which case has the greatest change in velocity?
Case A
400
If you apply an impulse to an object what happens to the object's momentum?
It increases.
500
For a given change momentum the change in velocity is related to the ___________ to an object's mass.
What is this relationship?
Inverse
{\Delta p}/{m}=\Delta v
500
A large truck collides with a small bicycle.
Which vehicle experiences the largest change in velocity?
The bicycle
Bicycle's mass is smaller so change in velocity must be greater
500
A 60 kg quarterback is running at 0.4 m/s down the field. A 90 kg halfback is running at 0.3 m/s down the field.
Which player has the most momentum?
The halfback
500
Which case has the greatest change in momentum?
Case A
500
Which has a greater impulse? A force of 35 newtons over 5.5 seconds? Or a force of 1.925*10^4 N over 1 ms ?
Neither, they are the same.