Newton's Second Law: Force and Acceleration (Part 3)

What You'll Learn

Newton's second law says that force equals mass times acceleration (F = ma). A heavier object needs more force to accelerate at the same rate as a lighter one.

Key Words

Newton
acceleration

Materials Needed

ramps
string
weights
tape
ruler

Safety First

Keep small objects away from young children.
Work in a well-ventilated area when using vinegar or other strong-smelling substances.
Dispose of materials properly after the experiment.

Steps

Step 1 — Read

Read and learn: Newton's second law says that force equals mass times acceleration (F = ma). A heavier object needs more force to accelerate at the same rate as a lighter one.

Step 2 — Do

Follow the procedure carefully, step by step.

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 unit is force measured in?