Question detail
Momentum scenario: a velocity-time graph shows acceleration, steady speed, and deceleration. Which answer best addresses Momentum and conservation of momentum (HT only) and the objective to (HT only) Calculate mass from momentum and velocity?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Momentum
Question
- A. In the velocity graph scenario, apply momentum to (HT only) Calculate mass from momentum and velocity while keeping mass versus weight separate.
- B. In the velocity graph scenario, mix up mass versus weight and ignore momentum.
- C. Use a general revision statement without applying Momentum and conservation of momentum (HT only) to the situation.
- D. Choose a different forces topic instead of explaining (HT only) Calculate mass from momentum and velocity.
Answer
The correct answer is: In the velocity graph scenario, apply momentum to (HT only) Calculate mass from momentum and velocity while keeping mass versus weight separate.
Explanation
The correct option is In the velocity graph scenario, apply momentum to (HT only) Calculate mass from momentum and velocity while keeping mass versus weight separate.. It is correct because the scenario says a velocity-time graph shows acceleration, steady speed, and deceleration, which must be interpreted through Momentum and conservation of momentum (HT only). This directly supports the learning objective to (HT only) Calculate mass from momentum and velocity. Use values 4, 12, and 15 only if the question asks for a calculation. The answer earns credit by naming the relevant force or motion quantity, using units when needed, and avoiding the boundary error mass versus weight.
Common mistake
Common Mistake in Momentum Calculations
Students often confuse mass and velocity when calculating mass from momentum, leading to incorrect answers.
To fix this, remember the formula for momentum (p = mv) and rearrange it correctly to find mass: mass = momentum / velocity. Ensure you are using the correct values for momentum and velocity.
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