Work and Energy Flashcard

Front

__________ is stored energy.

Back

Potential

Front

If a 3 kg object is at a height of 6 meters, what is its gravitational potential energy?

Back

294.3 J

Front

What happens to the KINETIC energy as the ball falls from point A to point C?

Back

It increases

Front

What happens to the TOTAL MECHANICAL energy as the ball falls from point A to point C?

Back

It doesn't change

Front

Determine the POTENTIAL energy of the cart at position 'B'.

Back

50,000 J

Front

What is the formula for calculating gravitational potential energy?

Back

PE = mgh (where PE = potential energy, m = mass, g = acceleration due to gravity, h = height)

Front

What is Kinetic Energy?

Back

The energy of an object due to its motion, calculated as KE = 1/2 mv².

Front

What is the principle of conservation of mechanical energy?

Back

In a closed system, the total mechanical energy (potential + kinetic) remains constant if only conservative forces are acting.

Front

How does height affect potential energy?

Back

Potential energy increases with height, as it is directly proportional to the height in the formula PE = mgh.

Front

What is the relationship between kinetic energy and speed?

Back

Kinetic energy increases with the square of the speed; doubling the speed quadruples the kinetic energy.