Momentum
What is the formula for calculating momentum?
p = mv
What is the formula for kinetic energy and gravitational potential energy?
KE = 1/2 m v^2 and GPE = mgh
What does the principle of conservation of momentum state?
The total momentum before an event equals the total momentum after an event.
I travel 25 m in a total of 15 seconds, how fast am I going?
1.6666 m/s
What is impulse?
The change in momentum of an object
What is the unit of momentum in metric units?
Kg * m/s
How is kinetic energy affected when an object moves uphill against gravity?
Kinetic energy decreases and gets converted to potential energy
In a closed system, if one object exerts a force on another, what happens to the momentum?
Momentum is transferred between the objects.
How do you differentiate between speed and velocity?
Speed is a scalar quantity and velocity is a vector.
Write the formula for impulse
F * delta t = m * delta v
If an object's mass is doubled, how does its momentum change if its velocity remains constant?
Doubles
How does the kinetic energy change if the speed of an object is tripled?
KE increases by a factor of 9
Describe a situation where conservation of momentum can be observed.
game of pool or other answers.
If an object starts from rest and accelerates at 2 m/s^2 for 5 s, what is the final velocity?
10 m/s
30 N * s
Describe an example of real-world situation where momentum is conserved
Collision between two cars
Discuss the relationship between gravitational potential energy and height.
How does the conservation of momentum apply to explosions?
the total momentum before the explosion equals the total momentum after the explosion
A car travels 1440 m in an hour, the car then stops for lunch for 2 hours, and then the car continues to travel 2000 m in 3 hours. What is the cars average speed over the trip?
688 m/s
How does impulse relate to momentum?
Impulse equals the change in momentum from a force being applied to an object over time.
Explain how momentum is related to force and time.
What is the relationship between kinetic energy and work done on an object?
work done is equal to the change in kinetic energy.
It allows us to predict the velocities of objects pre or post collision.
What is the significance of the area under a velocity-time graph?
Discuss a real life example of impulse in sports.
baseball hitting a bat.... etc.