Forces Test Review

Front

What is net force?

Back

The net force is the overall force acting on an object when all the individual forces acting on it are combined. It determines the object's acceleration and direction of motion.

Front

What is the formula to calculate acceleration?

Back

Acceleration (a) can be calculated using the formula: a = F/m, where F is the net force applied to the object and m is its mass.

Front

What is inertia?

Back

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

Front

What happens when forces are balanced?

Back

When forces are balanced, the net force is zero, and the object remains at rest or continues to move at a constant velocity.

Front

What happens when forces are unbalanced?

Back

When forces are unbalanced, the net force is not zero, causing the object to accelerate in the direction of the larger force.

Front

What is the unit of force?

Back

The unit of force is the Newton (N), which is defined as the force required to accelerate a 1 kg mass by 1 m/s².

Front

How do you determine the direction of net force?

Back

The direction of the net force is determined by the direction of the larger force when multiple forces are acting on an object.

Front

What is gravitational force?

Back

Gravitational force is the attractive force between two masses. It is proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Front

What is friction?

Back

Friction is the force that opposes the motion of an object. It acts parallel to the surfaces in contact and can be static or kinetic.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, measured in kilograms (kg), while weight is the force exerted by gravity on that mass, measured in Newtons (N). Weight can change with gravity, but mass remains constant.