Force, Gravity, and Motion

Front

What causes a change in an object's motion?

Back

Unbalanced forces cause a change in an object's motion.

Front

What is net force?

Back

Net force is the overall force acting on an object when all the individual forces are combined.

Front

What happens when forces are balanced?

Back

When forces are balanced, an object at rest stays at rest, and an object in motion continues to move at a constant velocity.

Front

What is gravity?

Back

Gravity is the force that attracts two bodies toward each other, commonly experienced as the force that pulls objects toward the Earth.

Front

How does mass affect weight?

Back

Weight is the force of gravity acting on an object's mass; therefore, if mass decreases, weight also decreases.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object, which can occur due to a change in speed or direction.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

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 an unbalanced force.

Front

What is the formula for calculating weight?

Back

Weight (W) = mass (m) × acceleration due to gravity (g), where g is approximately 9.8 m/s² on Earth.

Front

What is free fall?

Back

Free fall is the motion of an object under the influence of gravity only, with no other forces acting on it.