Vocabulary
Describing Motion and Force
Speed, Velocity, and Acceleration
Newton’s Laws of Motion
Friction and Gravitational Interactions
100
A push or a pull that can cause an object to speed up, slow down, or change direction.
What is a force?
100
This is the term for a place or object used for comparison to determine whether something is in motion.
What is a reference point?
100
If a runner covers 400 m in 80 seconds, their average speed is this.
What is 5 m/s?
100
According to Newton’s Second Law, acceleration depends on these two quantities.
What are force and mass?
100
This type of friction keeps an object from moving when a force is applied.
What is static friction?
200
The distance an object travels divided by the time it takes is known as this quantity.
What is speed?
200
The net force of the object shown in the image.
What is 5 N to the left?
200
An athlete increases speed from 4 m/s to 10 m/s in 3 seconds. What is their acceleration?
What is 2 m/s²?
200
This law tells us that for every action there is an equal and opposite reaction.
What is Newton’s Third Law?
200
The type of friction that occurs when an object moves through air or water.
What is fluid friction (drag)?
300
Mass measures the amount of matter in an object, while this measures the force of gravity on it.
What is weight?
300
When two equal and opposite forces act on an object and cancel each other out, they are called these.
What are balanced forces?
300
On a distance–time graph, this feature represents the object’s speed.
What is the slope of the line?
300
This law states that an object at rest will stay at rest unless acted upon by a nonzero net force.
What is Newton’s First Law (Law of Inertia)?
300
The gravitational force between two objects depends on these two factors.
What are mass and distance?
400
This term describes how velocity changes over time.
What is acceleration?
400
The net force of the object shown in the image.
What is 50 N to the left?
400
The average speed during the first two seconds of motion.
What is 6 m/s?
400
If a volleyball experiences a net force of 2 N and accelerates at 8 m/s², its mass is this.
What is 0.25 kg?
400
If an elephant has a mass of 6,000 kg, its weight on Earth (where g = 9.8 m/s²) is this.
What is 58,800 N?
500
This type of force acts between two surfaces rubbing together, and always opposes motion.
What is friction?
500
If the net force on an object is zero, the object’s motion will change in this way.
What is it will not change / remain at rest or move at constant velocity?
500
The distance covered in 10 seconds.
What is 72 m?
500
The property of an object that resists changes in motion and increases with mass.
What is inertia?
500
An object's weight in space, far from any gravitational pull.
What is 0N?