Kinetic Energy & Forces

Front

What is the term for forces acting on an object that are equal in size and opposite in direction?

Back

Balanced forces.

Front

What force is responsible for pulling objects towards the center of the Earth?

Back

Gravity.

Front

How is average speed calculated?

Back

Average speed is calculated as distance divided by time.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist a change in its motion.

Front

What is the definition of force in physics?

Back

A force is a push or pull acting on an object.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion.

Front

What is the formula for calculating kinetic energy?

Back

Kinetic energy (KE) = 1/2 mv², where m is mass and v is velocity.

Front

What happens to the kinetic energy of an object if its speed doubles?

Back

The kinetic energy increases by a factor of four, since KE is proportional to the square of the velocity.

Front

What is the relationship between mass and kinetic energy?

Back

Kinetic energy is directly proportional to the mass of the object; as mass increases, kinetic energy increases.

Front

What is the effect of unbalanced forces on an object?

Back

Unbalanced forces cause an object to accelerate in the direction of the net force.