Forces and Motion
An object changes its relative position in regards to another object.
What is Motion?
How fast an object is moving.
What is Speed?
The rate velocity changes at.
What is acceleration?
An object at rest will stay at rest, and an object in motion will stay in motion unless acted on by an outside force.
What is Newton's First Law?
The pull on an object that causes it to accelerate towards a larger object (usually a downward pull).
What is Gravity?
A push or pull that is applied to an object.
What is Force?
How fast an object moves in a specific direction.
What is velocity?
An object speeding up.
What is a Positive Acceleration?
The equation to calculate Newton's Second Law.
What is Force = mass x acceleration?
Force that resists motion between two surfaces in contact.
What is Friction?
Unit of measurement of forces.
What are Newtons (N)?
The equation to calculate average speed.
What is Speed = Total Distance / Total Time?
An object moving at a constant velocity.
What is Zero Acceleration?
When an object exerts a force on another object, the second object exerts an equal and opposite force on the first.
What is Newton's Third Law?
The acceleration of gravity on Earth. (Must have units)
A force that acts on an object from a distance (ex. gravitational, magnetic, electrostatic).
What are Non-Contact Forces?
The speed a zebra runs 240m in 20 seconds. (Must have units)
What is 12 m/s?
The equation to calculate acceleration.
What is Acceleration = (Final Velocity - Initial Velocity) / Time?
How increasing mass affects acceleration.
What is Decreasing Acceleration?
The equal and opposite force of gravity.
What is Normal Force?
Combination of all forces acting on an object. (Can be positive OR negative)
What is Net Force?
A runner's average speed if she completes four 400m laps in the following times: (Must have units)
Lap 1: 83s
Lap 2: 81s
Lap 3: 79s
Lap 4: 77s
What is 5 m/s?
Amy starts sliding with a velocity of 1m/s. After 3 seconds, her velocity is 7m/s. (Must have units)
What is 2 m/s2?
The force needed to move a 15kg box at an acceleration of 4m/s.
What is 60 Newtons (N)?
The gravitational force of a 25kg ball.
What is 245 Newtons (N)?