Momentum
Calculating Momentum
Momentum Conservation
Momentum Change
100
Momentum = Mass x _________
velocity
100
What is the momentum of a 60-kg halfback moving eastward at 9 m/s.
540 kg•m/s, east
100
Is this true for elastic or inelastic collisions, or both?
BOTH
100
what is the symbol for change
triangle (delta)
200
The change in velocity is related to the ___________ to an object's mass.
What is this relationship?
negative reciprocal
200
Momentum of a 1000-kg car moving at 20 m/s.
20 000 kg•m/s
200
True/False
For any collision occurring in an system, momentum is conserved.
true
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).
300
True/False
An object's momentum is indirectly proportional to an object's velocity (as one increases, the other decreases)
false
300
A car possesses 20 000 units of momentum. What would be the car's new momentum if the velocity doubled?
40,000 units of momentum
300
A large truck collides with a small bicycle.
Which vehicle experiences the greatest force of impact?
both have the same
300
Which case has the biggest momentum change?
case B,
momentum change depends on velocity change
400
The letter for momentum is ____________
p
400
A car possesses 20 000 units of momentum. What would be the car's new momentum if its mass was doubled (by adding more passengers),
40,000 units of momentum
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
Which case has the greatest change in velocity?
case A
500
Momentum is a ______________ quantity with both magnitude and direction.
vector
500
A 60 kg quarterback is running at 3 m/s down the field.
A 90 kg halfback is running at 2 m/s down the field.
Which player has the most momentum?
neither, both players have the same momentum.
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
Which case has the greatest change in momentum?
Case A