Forces Review (N 1st & 2nd Laws)

Front

What happens to acceleration when mass increases while force remains constant?

Back

The acceleration of the object will decrease.

Front

What is the normal force acting on a 10 kg book pushed down with a force of 30N?

Back

The normal force is 128 N.

Front

What are contact forces?

Back

Contact forces include normal force and friction.

Front

How do you calculate net force if an object accelerates from rest to a certain speed?

Back

Net force can be calculated using F = ma, where 'm' is mass and 'a' is acceleration.

Front

What is the difference between weight and mass?

Back

Weight is the force of gravity on an object, while mass is the amount of matter in an object.

Front

What is Newton's First Law of Motion?

Back

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 Newton's Second Law of Motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F = ma).

Front

What is the formula for calculating weight?

Back

Weight (W) = mass (m) × gravitational acceleration (g).

Front

What is gravitational force?

Back

Gravitational force is the attractive force between two masses.

Front

What is the role of friction in motion?

Back

Friction opposes the motion of an object and can affect acceleration.