Practice Net Force in Physics

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Quick Recap

The single resultant force obtained by vector addition of all individual forces acting on an object, which alone determines the object's acceleration according to Newton's second law.

What you get when you add up all pushes and pulls, accounting for direction.

Example 1

easy
Three forces act on an object: 10 \text{ N} right, 4 \text{ N} left, and 3 \text{ N} left. What is the net force?

Example 2

medium
Two perpendicular forces act on an object: 6 \text{ N} east and 8 \text{ N} north. What is the magnitude of the net force?

Example 3

medium
A 4 \text{ kg} object experiences forces of 20 \text{ N} forward and 8 \text{ N} backward. What is the net force and resulting acceleration?

Example 4

easy
A 10 \text{ kg} sled accelerates east at 1.5 \text{ m/s}^2. What is the net force on the sled?
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