Question

1.3.2 test (cst): science and engineering
question 6 of 25
which two quantities can be used to describe motion?
a. speed and weight
b. displacement and weight
c. displacement and velocity
d. velocity and mass

Explanation:

To determine which quantities describe motion, we analyze each option:

• Option A: Weight is a force due to gravity, not a motion - describing quantity. Speed is related to motion, but weight isn't, so A is incorrect.
• Option B: Weight is not a motion - describing quantity. Displacement is related to motion, but weight isn't, so B is incorrect.
• Option C: Displacement (change in position) and velocity (rate of change of position) are both fundamental quantities used to describe motion.
• Option D: Mass is a measure of the amount of matter, not a motion - describing quantity. Velocity is related to motion, but mass isn't, so D is incorrect.

Answer:

C. Displacement and velocity