Forces and motion

Front

What is displacement?

Back

Displacement is the shortest distance from the initial to the final position of an object, including direction. It can be zero if the object returns to its starting point.

Front

What is Newton's 2nd law of motion?

Back

Newton's 2nd law states that the force acting on an object is equal to the mass of that object multiplied by its acceleration (F=ma).

Front

What type of force opposes motion?

Back

Friction is the force that resists the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.

Front

What does a constant speed graph look like?

Back

A constant speed graph is a straight line that shows a steady increase in distance over time.

Front

If a book is pushed with 10 Newtons to the left and does not move, how much force is being applied to the right?

Back

10 Newtons of force is being applied to the right to balance the 10 Newtons to the left.

Front

What is the formula for calculating force?

Back

Force (F) = mass (m) × acceleration (a).

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 net external force.

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 gravitational force?

Back

Gravitational force is the attractive force between two masses. It pulls objects toward each other, such as the Earth pulling objects toward its center.

Front

What is the unit of force?

Back

The unit of force is the Newton (N).