May the Force be with You because it's all in the Motion
A student is riding a roller coaster. The roller coaster moves up a hill slowly and then starts to move faster as it goes toward the bottoms of the hill. Where on the hill will the student have the MOST energy?
At the bottom of the hill.
The car reaches its greatest speed when it uses all of its potential energy.
According to Newton's second law of motion, what is the relationship between force, mass, and acceleration?
Force =mass x acceleration
Mr. Lee heats a pot of water on the stove. Water heated at the bottom of the pot flows to the top of the pot. The colder water at the top sinks. As the water moves, heat flows from the hotter water to the colder water. Which term describes tis method of heat transfer?
Convection
When part of the fluid expands due to heating, its density is reduced relative to the rest of the water in the pot, so the heated water rises. Remember it is a cycler cold water sinks, warm water rises
According to Newton's second law of motion, what is the relationship between force, mass and acceleration
Force = mass x acceleration
What happens to the motion of an object when an unbalanced force acts upon it?
The object can slow down, the object can speed up, the object can change direction.
Which of these describes an object with the largest acceleration?
1. an object with a small change in velocity over a small change in time.
2. an object with a large change in velocity over a small change in time.
An object with a large change in velocity over a small change in time.
Acceleration is dependent on how quickly there is a change in velocity. A large change in velocity over a small period of time will have the highest acceleration.
What is the unit for measuring energy?
Joules
What is the process by which heat energy gets to the Earth from the Sun?
Radiation
A car is moving at a constant speed along a straight road. What can you infer about the net force acting on the car?
The net force is zero
What is true about the relationship between mass and inertia?
The great the mass, the greater the inertia
A 10 N force is applied to an object with the mass of 2 kg. What is the resulting acceleration of the object?
2 m/s^2, 5'm/s^2, 10m/s^2, 20m/s^2
10 m/s^2
What is the relationship between work and energy?
Work is the transfer of energy from one object to another
When water boils in a pan on a hot burner, heat gets to the water mainly by...
A conduction of heat through the pan
What is the law of conservation of energy?
Energy cannot be created or destroyed only converted from one form to another
What is the difference between potential and kinetic energy?
Potential is energy of position (stored) kinetic is energy of motion
If the mass of an object is doubled, how will it affect the gravitational force between that object and another object, assuming the distance between them remains the same.
The gravitational force will be doubled
If a book is pushed across a table with a certain force, how will the force of friction between the book and the table change if the book is pushed with greater force?
The force of friction will increase
Energy appears in many different forms. What form is lightning?
Electrical energy
What of he following factors affects the accleration of an object?
mass of the object
force applied to the object
both mass and force
neither mass and force
both mass and force
Which of the following factor does NOT affect the force of friction between two object?
colors of the objects
What happens to the acceleration of an object if the net force acting on it increases, assuming the mass remains the same.
The acceleration is will increase
Gasoline, wood, water behind a dam, and a boulder on the edge of a cliff all represent some form of potential energy. What form of potential energy do gasoline and wood have in common?
Chemical
Water flows from behind a large dam can cause machines to produce electricity. What change takes place?
ex. mechanical to light
Mechanical energy is used to produce electrical energy
In an amusement park a moving bumper car (1) collides with bumper car (2). After the collision both cars move. If momentum is conserved, which statement is correct?
1.The momentum of car 1 increases and the momentum of car 2 decreases.
2. The momentum of car 1 decreases and the momentum of car 2 increases.
3. The total momentum of both cars increases
4. The total momentum of both cars decreases
The momentum of car 1 decreases and the momentum of car 2 increases
To pull a bucket of water from a well, George pulled on a handle to a wind up a rope. What kind of energy was George applying to the handle?
Mechanical enery