Topic 4 Vocabulary 8th S

Topic 4 Vocabulary

Use these definitions to complete the Topic 4 Vocabulary worksheet. When you have completed it, answer the questions that follow.

The change in position of an object over time.

1. Motion

2. Acceleration

The rate at which an object’s velocity changes over time.

The tendency of an object to resist a change in its motion, related to its mass.

3. Inertia

The unit of force in the International System of Units (SI), where 1 Newton equals 1 kilogram meter per second squared (1 N = 1 kg·m/s²).

4. Newton

These forces occur when two objects physically touch each other.

5. Contact Force

These forces act on an object without any physical contact.

6. Non-Contact Force

Forces that are equal in size and opposite in direction, resulting in no change in motion.

7. Balanced Forces

Forces that are not equal, causing a change in an object’s motion.

8. Unbalanced Forces