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question 9
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which list contains only vector quantities?
o a. force, time, velocity
o b. acceleration, distance, speed
o c. electric field strength, momentum, weight
o d. electric field strength, momentum, weight

Explanation:

• Option A: Time is a scalar quantity (it has only magnitude), so this option is incorrect.
• Option B: Distance and speed are scalar quantities (distance is just the length of a path, speed is magnitude of velocity). So this option is wrong.
• Option C: Electric field strength (\(\vec{E}\), has magnitude and direction), momentum (\(\vec{p}=m\vec{v}\), has magnitude and direction), weight (\(\vec{W} = m\vec{g}\), has magnitude and direction) are all vector quantities.
• Option D: Same as option C.

Answer:

C. electric field strength, momentum, weight
D. electric field strength, momentum, weight