Work,Power,Energy

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration, often related to its height above the ground.

Front

What is power in the context of physics?

Back

Power is the rate at which work is done or energy is transferred, measured in watts (W).

Front

How is work defined in physics?

Back

Work is defined as the product of force and the distance over which it acts, and it is measured in joules (J).

Front

What is the formula for calculating gravitational potential energy?

Back

Gravitational potential energy (PE) can be calculated using the formula PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What is kinetic energy?

Back

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

Front

How does the height of an object affect its potential energy?

Back

The potential energy of an object increases with height; the higher the object, the greater its potential energy.

Front

What is the relationship between work and energy?

Back

Work done on an object results in a change in its energy; energy can be transferred or transformed through work.

Front

What factors affect the power required to perform work?

Back

The power required to perform work depends on the amount of work done and the time taken to do it; more work in less time requires more power.

Front

How do you calculate power when lifting an object?

Back

Power can be calculated using the formula P = W/t, where P is power, W is work done, and t is the time taken.

Front

What is the difference between work done by a person walking up stairs and running up stairs?

Back

Both activities require the same amount of work because work is dependent on the height gained, not the speed of ascent.