Energy
Define Kinetic energy
Energy that an object has because it is moving
An object moves at a constant speed of 10 meters per second. How far will it travel in 3 seconds?
30 meters
A rocket launches into space. At the moment of launch, the engine thrust is greater than the gravitational force. What will happen?
A) The rocket will fall back to Earth
B) The rocket will remain stationary
C) The rocket will accelerate upward
D) The rocket will move at constant velocity
C) The rocket will accelerate upward
What happens to an object when an unbalanced force acts on it?
It accelerates (changes speed, direction, or both)
Finish this sentence: "She gon call me....
baby boo
A book is sitting on a shelf. Which type of energy does the book have?
Potential Energy
On a distance vs. time graph, what does a straight line indicate?
The object is moving at constant speed
What is a force?
A) The speed of a moving object
B) A push or pull that can change an object's motion
C) The amount of matter in an object
D) The energy stored in an object
B) A push or pull that can change an object's motion
A book rests on a table. The gravitational force pulling down equals the normal force from the table pushing up. What is the net force on the book?
Zero
What is the main difference between mass and weight?
Mass is the amount of matter; weight is the gravitational force on that matter
As a ball is thrown upward into the air, what happens to its kinetic energy?
It decreases until it reaches the highest point
If an object moves at a slower constant speed, how would the line on a distance vs. time graph change?
It would be less steep
Describes the Law of Gravity
Every object exerts a gravitational force on every other object
A car accelerates from a stoplight. Which force is greater than the others?
A) Friction is greater than engine thrust
B) Engine thrust is greater than friction and air resistance
C) Air resistance is greater than engine thrust
D) All forces are equal
B) Engine thrust is greater than friction and air resistance
Mr. Schiller's birthday is at the end of March, so what would be his zodiac sign?
Aries
What is the Law of Conservation of Energy?
Energy cannot be created or destroyed; it only changes form
A car drives down the highway at a constant speed of 60 mph. Which statement is true?
A) The forces on the car are unbalanced
B) The net force on the car is greater than zero
C) The forces on the car are balanced
D) The car is accelerating
C) The forces on the car are balanced
How does gravitational force change if you double the mass of an object?
It doubles
A car is turning a corner at constant speed. What type of force causes the car to change direction?
Friction between the tires and the road
What happens when you bring a magnet close to a metal paperclip without touching it?
The paperclip moves toward the magnet due to magnetic force
At the highest point of a pendulum swing, what will be true about the potential and kinetic energy?
Kinetic energy is at it's lowest or zero, potential energy is at it's highest.
An astronaut has a mass of 60 kg on Earth and on the Moon. Why is the astronaut's weight different on the Moon than on Earth?
B) The Moon has weaker gravity than Earth
How does gravitational force change if you move two objects twice as far apart?
It becomes one-fourth as strong
Which statement correctly relates unbalanced forces to motion?
A) Unbalanced forces keep objects moving at constant velocity
B) Unbalanced forces cause objects to accelerate
C) Balanced forces cause objects to accelerate
D) Unbalanced forces have no effect on motion
B) Unbalanced forces cause objects to accelerate
What can run but never walks, has a mouth but never talks, has a head but never weeps, and has a bed but never sleeps?