Simple Machines: Video Quiz

The video tutorial introduces the concept of work in physics, explaining how it is calculated by multiplying force and distance. It covers the definition of power as the amount of work done per unit time and introduces joules per second as a unit of power. The tutorial also discusses simple machines, their role in making work easier, and provides examples such as a seesaw and inclined plane.

What happens when an object is moved in the direction of the applied force?

• It gains speed

• Work is done

• It changes shape

• It stops moving

How do you calculate work done on an object?

• Add force and distance

• Subtract force from distance

• Divide force by distance

• Multiply force by distance

What is the term for the amount of work done per unit time?

• Energy

• Velocity

• Power

• Force

What is another name for joules per second?

• Watt

• Newton

• Pascal

• Ampere

What is a simple machine with a sloping surface called?

• Pulley

• Lever

• Inclined plane

• Wheel and axle