Graphical Representation of Motion MCQs

Q1. Which of the following is a scalar quantity?

• A.Speed
• B.Velocity
• C.Displacement
• D.Acceleration

Answer: A. Speed

What does the chapter say about this? Speed has only magnitude -> scalar. Does that line up with one of the options? Yes - Correct. And the rest? option B) 'Velocity' doesn't hold - A vector; option C) 'Displacement' is incorrect: A vector. Pick: A) Speed.

Q2. Why is a velocity-time graph more informative than a distance-time graph for studying acceleration?

• A.its slope directly gives acceleration and its area gives distance
• B.it shows the body's mass
• C.it cannot show acceleration at all
• D.it only works at rest

Answer: A. its slope directly gives acceleration and its area gives distance

What's the underlying rule? A velocity-time graph yields acceleration (slope) and distance (area) directly, which a distance-time graph does not. Does that line up with one of the options? Yes - Correct. And the rest? option B) 'it shows the body's mass' misses the point - Neither graph shows mass; option C) 'it cannot show acceleration at all' doesn't hold - Its slope is exactly the acceleration. Pick: A) its slope directly gives acceleration and its area gives distance.

Q3. Two bodies start from rest at the same point. On a v-t graph, body A has a steeper line than body B. After the same time t, which body has covered more distance?

• A.Body B
• B.Cannot be determined without mass
• C.Both cover the same distance
• D.Body A

Answer: D. Body A

Steeper slope => larger acceleration => larger velocity at every instant => larger area under v-t graph => more distance.