Simple Machines & Force

Front

Which of the following is NOT a simple machine? Lever, Wheel & Axle, Doorknob, Pulley

Back

Doorknob

Front

Simple machines can change a force by...

Back

Changing the direction of a force & increasing the distance

Front

What two measurements do you need in order to calculate an object's speed?

Back

distance & time

Front

What determines velocity?

Back

speed and direction

Front

A force is

Back

a push or pull

Front

Rough surfaces have ________ friction

Back

more

Front

Smooth surfaces have _______ friction

Back

less

Front

What is the unit of force in the International System of Units (SI)?

Back

Newton

Front

Which of the following is an example of kinetic energy?

• A compressed spring
• A moving car
• A charged battery
• A stretched rubber band

Back

A moving car