Work and Power

Front

What is the unit for mass?

Back

Kilogram (Kg)

Front

What is the unit used to measure power?

Back

Watt

Front

How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?

Back

0 J

Front

How far does a car that weighs 5,000 N go if 18,000 J of work is done on it?

Back

3.6 m

Front

How much power is the tractor that drags a plow with a force of 500 N a distance of 10 meters in 20 seconds?

Back

250 Watts

Front

Define work in physics.

Back

Work is done when a force causes an object to move in the direction of the force.

Front

What is the formula for calculating work?

Back

Work (W) = Force (F) × Distance (d) × cos(θ), where θ is the angle between the force and the direction of motion.

Front

What is the relationship between work and energy?

Back

Work done on an object results in a change in energy of that object.

Front

What is the unit of work?

Back

Joule (J)

Front

Define power in physics.

Back

Power is the rate at which work is done or energy is transferred.