Force and Motion Flashcard

Front

What is a balanced force?

Back

A balanced force is when two forces acting on an object are equal in size but opposite in direction, causing the object to stay in place or move at a constant speed.

Front

What happens to an object when an unbalanced force acts on it?

Back

An unbalanced force causes an object to accelerate, decelerate, or change direction.

Front

Define speed.

Back

Speed is the distance traveled per unit of time, typically measured in meters per second (m/s).

Front

How do you calculate speed?

Back

Speed = Distance / Time.

Front

What is the speed of an object that travels 60 meters in 4 seconds?

Back

15 m/s.

Front

What is velocity?

Back

Velocity is the speed of an object in a specific direction.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity (only magnitude), while velocity is a vector quantity (magnitude and direction).

Front

What does it mean for an object to have a changing velocity?

Back

An object has a changing velocity if it is accelerating, decelerating, or changing direction.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object, measured in meters per second squared (m/s²).

Front

What is the formula for acceleration?

Back

Acceleration = (Final Velocity - Initial Velocity) / Time.