The Wheel and Axle (Part 2)

What You'll Learn

A force is a push or pull that can change an object's motion, shape, or direction. Forces are measured in Newtons and can act through contact or at a distance.

Key Words

screw
wheel and axle

Materials Needed

spring scale
stopwatch
pencils
toy cars
ramps

Safety First

Do not mix unknown chemicals together.
Tie back long hair before starting the experiment.
Protect your work surface with newspaper or plastic.

Steps

Step 1 — Read

Read and learn: A force is a push or pull that can change an object's motion, shape, or direction. Forces are measured in Newtons and can act through contact or at a distance.

Step 2 — Do

Measure and record your data in a table.

Step 3 — Observe

Watch carefully for any changes and note the time.

Step 4 — Record

Create a data table to organize your measurements.

Check Your Understanding

Question 1

1 of 3

What does friction do?