Forces and Motion Practice

Front

What is the relationship between mass and acceleration according to Newton's second law?

Back

The acceleration of an object is inversely proportional to its mass when the same force is applied. A more massive object will accelerate less than a less massive object when the same force is applied.

Front

What is net force?

Back

Net force is the total force acting on an object after all the forces are combined. It determines the object's acceleration.

Front

How do you calculate net force?

Back

Net force can be calculated by subtracting opposing forces from each other. For example, if a force of 200 N is applied to the right and there is a frictional force of 50 N to the left, the net force is 200 N - 50 N = 150 N to the right.

Front

What happens to the velocity of an object when a net force is applied?

Back

The velocity of an object changes in the direction of the net force applied to it.

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 effect of mass on the motion of an object?

Back

The greater the mass of an object, the more force is required to change its motion (accelerate it).

Front

What is the principle of action and reaction?

Back

For every action, there is an equal and opposite reaction. This means that forces always occur in pairs.

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces do not change an object's motion (net force is zero), while unbalanced forces cause an object to accelerate (net force is not zero).

Front

What is the formula for calculating acceleration?

Back

Acceleration can be calculated using the formula: a = F/m, where 'a' is acceleration, 'F' is net force, and 'm' is mass.

Front

What happens during a collision between two objects of different masses?

Back

The object with less mass will typically experience a greater change in velocity than the object with more mass, assuming the same force is applied.