Understanding Work and Energy Concepts

A box is pushed horizontally with a force of $$20\,\text{N}$$ over a distance of $$5\,\text{m}$$ . How much work is done on the box by the force?

A $$50\,\text{kg}$$ object is lifted vertically upward by $$2\,\text{m}$$ . What is the work done against gravity? (Take $$g = 10\,\text{m/s}^2$$ )

If a force of $$10\,\text{N}$$ acts at an angle of $$60^\circ$$ to the direction of motion and moves an object $$3\,\text{m}$$ , what is the work done by the force?

A student pulls a sled with a force of $$40\,\text{N}$$ at an angle of $$30^\circ$$ above the horizontal for $$10\,\text{m}$$ . What is the work done by the student?

A spring with a spring constant $$k = 200\,\text{N/m}$$ is compressed by $$0.1\,\text{m}$$ . How much work is required to compress the spring?

It took 500 Newtons of force to push a car four meters. How much work was done?

A force of 80 N is used to pull a 10-kg block at an angle of 60 degrees (shown above) to the right. If the block moves 5 meters to the right, how much work was done on the block.

When force is used to move an object across a distance, this is called...