Potential/Kinetic Energy
The unit for measuring energy
Joule
What type of force will slow a moving object down?
ie pavement, carpet, grass
Friction
The unit of measurement of Force
Newton
A push or pull
Force
Two students push a cart in opposite directions with 10 Newtons of force each. This is an example of __________ force.
Balanced
What is Kinetic Energy?
energy in motion
When mass increases, speed...
Decreases
Give an example of a projectile
Answers vary
The formula for speed
Speed = Distance/Time
A biker travels 30 kilometers in 1.5 hours. What is their average speed in kilometers per hour?
20 km/h
A rock sitting on the edge of a cliff has what kind of energy?
Potential Energy
Newton's First Law of Motion is also called...
"Law of Inertia"
Newton's Second Law is about...
Acceleration
Newton's 3rd Law States...
For every reaction, there is an equal and opposite reaction
Find the average of the following 3 roller coaster trials: 1.5 sec., 2 sec, 1.75 sec.
1.75 sec.
When is a roller coaster at its maximum kinetic energy?
at the lowest point of the bottom slope of the roller coaster
What is static friction?
Friction between 2 objects that are not moving
Give an example of rolling friction
Answers vary
Explain what gravity is.
The force that pulls falling objects toward Earth
I kicked the wall with my foot - what happens and which law does that represent?
It will hurt because of the 3rd law - The wall will push back against my foot. It is an equal and opposite reaction
What is the formula for Momentum?
Momentum = mass x velocity
The rate of change of velocity in an object is called this.
Acceleration
Describe the difference between mass and weight.
Weight is the force exerted on an object due to gravity. Mass is the amount of matter something has.
What does the law of conservation of energy state?
Energy cannot be created nor destroyed; only transferred from one object to another.
Which has more momentum? a 300 kg giraffe going 6 m/s or a 500 kg gorilla going 4 m/s
gorilla