Show:
Units
Motion
Force and Energy
Momentum
Work and Power
100
The unit for mass
What is kilograms
100
Define velocity
What is speed with direction?
100
Define force
Any action on a body that causes it to change motion
100
Define impulse
What is a change in momentum?
100
Define power
What is the rate of doing work?
200
Netwon's measure this
What is Force?
200
Compare/Contrast Speed and Acceleration
Speed is the distance traveled over time. Acceleration is the change in speed (rate).
200
This is the only force acting on objects in freefall
What is gravity
200
Explain conservation of momentum?
What is the momentum of a system is constant if there are no external forces acting on the system?
200
The formula for work?
What is W=fd?
300
12.0 km equals how meters?
What is 12000m
300
If Lexi bikes at an average of 24 mph, how many hours will is take her to cover 96 miles.
What is 4 hours?
300
An example of chemical energy.
What are batteries?
300
The formula to calculate momentum
What is P=mv?
300
True or False: If you apply a force to an object work is performed. Explain your answer
F: Objects needs to move a distance
400
A vector quantity has this?
What is magnitude and direction?
400
Interpret the distance time graph. Identify the interval with the greatest acceleration.
What is CD
400
The potential energy formula
What is PE=(m)(g)(h)
400
Compare/Contrast momentum and inertia
Momentum is the product of mass and velocity. Inertia is the resistance to any change in motion of an object with mass.
400
If you pull a toy with 200.0N of force for 5 meters in 2 seconds, how much power did you use?
P = (200.0N)(5 m)/2s = 500 watts
500
The two quantities that are measured in Joules
What is Work and Energy?
500
Identify Newtons three laws of Motion
i. An object in motion tend to stay in motion unless acted upon by an external force ii. F=ma iii. Every action has an equal and opposite reaction
500
A person with a mass of 75 kg is accelerated to 3 m/s2. How much force was applied to him?
What is 225N?
500
Determine the momentum of a 60 kg football player moving eastward at 10 m/s
What is 600N?
500
A 20 N force is applied to an object that moves 4 meters, what is the amount of work?
What is 80 Joules?