Force and Motion

What is "force"?

• Force is defined as external agent that can fluctuate a body's state of rest or motion.

• Force is defined as an external agent that reduces the impact of something.

• Force is defined as the state of when something does not use up energy.

• Force is defined as the state of when something uses up energy.

What is the SI unit of force?

• Newton

• Joule

• Watt

• Pascal

The formula for efficiency is ________.

The efficiency of a machine is never 100% Why?

Give an example of a lever using 1-2 words.

The formula of VR is ______.

• Effort distance * Load distance

• Effort / Load

• Effort distance / Load Distance

• ED x LD + E x L

In the diagram below, a girl sits on a sled and slides down a hill of snow. Which arrow represents the force of friction opposing the motion of the sled down the hill?

• Arrow A

• Arrow B

• Arrow C

• Arrow D

When we are not in motion, we are in absolute rest (with respect to the universe). True or False?

• True

• False

Average Velocity is ____.

• Total displacement divided by total time taken.

• Total distance divided by total time taken.

• Total displacement multiplied by total time taken.

• Total speed divided by total time taken.

Draw a First Class lever and label it's components.