Question detail
Forces and motion scenario: weight and normal contact force act on one object. Which answer best addresses Uniform acceleration (HT only) and the objective to (HT only) Use v^2 - u^2 = 2as to calculate distance when velocities and acceleration are known?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Forces and motion
Question
- A. In the book on table scenario, apply HT only to (HT only) Use v^2 - u^2 = 2as to calculate distance when velocities and acceleration are known while keeping distance versus displacement separate.
- B. In the book on table scenario, mix up distance versus displacement and ignore HT only.
- C. Use a general revision statement without applying Uniform acceleration (HT only) to the situation.
- D. Choose a different forces topic instead of explaining (HT only) Use v^2 - u^2 = 2as to calculate distance when velocities and acceleration are known.
Answer
The correct answer is: In the book on table scenario, apply HT only to (HT only) Use v^2 - u^2 = 2as to calculate distance when velocities and acceleration are known while keeping distance versus displacement separate.
Explanation
The correct option is In the book on table scenario, apply HT only to (HT only) Use v^2 - u^2 = 2as to calculate distance when velocities and acceleration are known while keeping distance versus displacement separate.. It is correct because the scenario says weight and normal contact force act on one object, which must be interpreted through Uniform acceleration (HT only). This directly supports the learning objective to (HT only) Use v^2 - u^2 = 2as to calculate distance when velocities and acceleration are known. Use values 7, 6, and 16 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 distance versus displacement.
Common mistake
Common Mistake in Uniform Acceleration Calculations
Students often confuse the variables in the equation v^2 - u^2 = 2as, leading to incorrect calculations of distance.
Carefully identify and label the initial velocity (u), final velocity (v), acceleration (a), and distance (s) before substituting values into the equation.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.