Force and Motion

Front

What is Newton's Second Law of Motion?

Back

Newton's Second Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be expressed with the formula F = ma, where F is force, m is mass, and a is acceleration.

Front

What does Newton's Third Law of Motion state?

Back

Newton's Third Law states that for every action, there is an equal and opposite reaction. This means that forces always occur in pairs.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. The more mass an object has, the greater its inertia.

Front

How is weight different from mass?

Back

Weight is the force exerted by gravity on an object, while mass is the amount of matter in an object. Weight can change depending on the gravitational field, but mass remains constant.

Front

What is the formula to calculate weight?

Back

Weight (W) can be calculated using the formula W = mg, where m is mass and g is the acceleration due to gravity (approximately 9.81 m/s² on Earth).

Front

What is friction?

Back

Friction is a force that opposes the motion of an object. It occurs when two surfaces come into contact and can vary in strength depending on the surfaces involved.

Front

What factors affect the force of friction?

Back

The force of friction depends on the nature of the surfaces in contact and the normal force pressing them together.

Front

What is the role of a net force in motion?

Back

The net force is the total force acting on an object after all the forces are combined. It determines the object's acceleration and direction of motion.

Front

What is a balanced force?

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion. An object at rest remains at rest, and an object in motion continues to move at a constant velocity.

Front

What is an unbalanced force?

Back

Unbalanced forces are not equal and can cause an object to accelerate, change direction, or change its state of motion.