Energy, Work, and Power

Front

What is the formula for calculating power?

Back

Power (P) = Work (W) / Time (t)

Front

Define work in the context of physics.

Back

Work is done when a force causes an object to move in the direction of the force. It is calculated as Work (W) = Force (F) x Distance (d).

Front

What is the unit of power?

Back

The unit of power is the Watt (W), which is equivalent to one Joule per second (J/s).

Front

How is kinetic energy defined?

Back

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

Front

What is potential energy?

Back

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

Front

Explain the principle of conservation of energy.

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is the relationship between work and energy?

Back

Work is a transfer of energy; when work is done on an object, energy is transferred to that object.

Front

How do you calculate the height of a ramp if given work and force?

Back

Height (h) can be calculated using the formula: h = Work (W) / (Force (F) x g), where g is the acceleration due to gravity.

Front

What is the significance of the highest point in a pendulum's swing?

Back

At the highest point, the pendulum has maximum potential energy and minimum kinetic energy.

Front

How does the speed of an object affect its kinetic energy?

Back

Kinetic energy increases with the square of the speed; doubling the speed increases kinetic energy by a factor of four.