gen-define-newton-s-second-law-and-give-one-short-worked-example-05a9

Define Newton's second law and give one short worked example.

# Newton's Second Law **Definition:** The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. **Formula:** $$F_{net} = ma$$ where: - F_net = net force (N) - m = mass (kg) - a = acceleration (m/s²) ## Worked Example **Problem:** A 1500 kg car accelerates from rest at 2.5 m/s². What net force is required? **Solution:** - Given: m = 1500 kg, a = 2.5 m/s² - Using F = ma: $$F_{net} = (1500\text{ kg})(2.5\text{ m/s}^2) = 3750\text{ N}$$ **Answer:** The net force required is **3750 N** (or 3.75 kN).