S8P3. Review

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It occurs when an object speeds up, slows down, or changes direction.

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces are equal in size and opposite in direction, resulting in no net force and no change in motion. Unbalanced forces result in a net force that causes an object to accelerate.

Front

How does mass affect acceleration?

Back

According to Newton's second law, acceleration is inversely proportional to mass. A larger mass results in less acceleration for the same amount of force applied.

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 (F=ma).

Front

What is the formula for calculating force?

Back

Force (F) is calculated using the formula F = mass (m) x acceleration (a).

Front

What happens to the acceleration of an object if the net force acting on it is zero?

Back

If the net force is zero, the object will not accelerate; it will either remain at rest or continue moving at a constant velocity.

Front

What is the role of gravity in motion?

Back

Gravity is a force that pulls objects toward each other, affecting their motion. On Earth, it pulls objects downward with a force of approximately 9.8 m/s².

Front

What is an example of unbalanced forces in everyday life?

Back

An example of unbalanced forces is when a person pushes a shopping cart; if the force applied is greater than the friction, the cart accelerates.

Front

What does a speed vs. time graph represent?

Back

A speed vs. time graph shows how speed changes over time. The slope of the graph indicates acceleration.

Front

What is the significance of the steepness of a graph in motion?

Back

The steeper the graph, the greater the acceleration. A flat line indicates constant speed, while a downward slope indicates deceleration.