Motion and Forces

Front

What is velocity?

Back

Velocity is the speed of an object in a specific direction. For example, a car traveling at 35 mph north has a velocity of 35 mph north.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes an object to change its motion. It occurs when the total forces acting on an object are not equal.

Front

What is a balanced force?

Back

A balanced force occurs when two forces acting on an object are equal in size but opposite in direction, resulting in no change in motion.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object when two surfaces rub against each other. It causes objects to slow down or stop.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a force.

Front

What is acceleration?

Back

Acceleration is the rate at which an object changes its velocity. It can be a change in speed or direction.

Front

What is mass?

Back

Mass is a measure of the amount of matter in an object, usually measured in kilograms or grams.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time. For example, if a car travels 100 miles in 2 hours, its speed is 50 mph.

Front

What is the relationship between force, mass, and acceleration?

Back

According to Newton's second law, Force = Mass x Acceleration. This means that the force acting on an object is equal to the mass of the object multiplied by its acceleration.