Energy in Motion 2

Front

What is kinetic energy?

Back

Kinetic energy is the energy that an object possesses due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

Which point on a roller coaster has the greatest kinetic energy?

Back

The point at the lowest elevation of the roller coaster typically has the greatest kinetic energy due to the conversion of potential energy to kinetic energy.

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state, commonly associated with gravitational potential energy, calculated as PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

What happens to potential energy as an object descends?

Back

As an object descends, its potential energy decreases while its kinetic energy increases, assuming no energy is lost to friction or air resistance.

Front

What is the normal force?

Back

The normal force is the force exerted by a surface to support the weight of an object resting on it, acting perpendicular to the surface.

Front

How does force affect the motion of an object?

Back

Force causes an object to accelerate in the direction of the net force applied, according to Newton's second law of motion (F = ma).

Front

What is the relationship between speed and kinetic energy?

Back

Kinetic energy is directly proportional to the square of the speed of an object; as speed increases, kinetic energy increases exponentially.

Front

What is the formula for calculating speed?

Back

Speed is calculated as distance traveled divided by the time taken, expressed as speed = distance/time.

Front

What is the significance of the direction of force in motion?

Back

The direction of force determines the direction of acceleration and thus the change in velocity of an object.

Front

What happens to the speed of an object as it accelerates?

Back

As an object accelerates, its speed increases if the acceleration is in the same direction as the motion.