Lesson Plan

• Define momentum as the product of mass and velocity and state that it is a vector quantity.
• Identify the SI units of momentum and explain its dependence on mass and velocity direction.
• Apply the equation p = m v to calculate momentum in simple situations.
• Interpret momentum values from a reference table of quantities.
• Solve basic momentum problems accurately and justify the steps.

• Whiteboard and markers
• Projector or interactive display
• Printed worksheet with practice questions
• Calculator for each student
• Diagram of a moving block (digital slide)
• Momentum reference table handout

Start with a brief demonstration of two carts colliding to highlight the idea of “how hard” an object moves. Prompt students to recall how mass and speed influence this effect, linking to prior knowledge of force and motion. Explain that today they will quantify this as momentum using the formula p = m v, and success will be shown by correctly solving simple momentum calculations.

1. Do‑now (5') – Quick question: “If a car doubles its speed, how does its momentum change?” Share responses.
2. Direct instruction (10') – Present definition, vector nature, units, and p = m v with slides and the block diagram.
3. Guided example (8') – Work through the 2 kg, 3 m/s example, checking for understanding.
4. Collaborative practice (12') – Pairs solve two practice questions on the worksheet while the teacher circulates.
5. Whole‑class check (5') – Discuss answers, address misconceptions.
6. Exit ticket (5') – Students calculate momentum of a 1.5 kg object moving at 4 m/s on a sticky note.

Recap that momentum is mass times velocity, a vector measured in kg·m·s⁻¹, and that the formula allows quick calculations. Have students write a one‑sentence summary of the concept as a retrieval practice. Assign homework: complete additional momentum problems from the textbook worksheet.