Which change definitely makes velocity non-uniform?
A
A change in direction
B
A change in mass
C
A change in temperature
D
A change in time unit
Correct Answer: Option A — A change in direction
Explanation:
A correct analysis gives A change in direction when magnitude, direction, units and conditions are considered. The question tests whether th...
A correct analysis gives A change in direction when magnitude, direction, units and conditions are considered. The question tests whether the learner can distinguish the required quantity from related ideas and use the stated information without adding unsupported assumptions. The alternatives A change in mass, A change in temperature, and A change in time unit do not satisfy the governing definition, graph interpretation, direction convention, or numerical relationship in this case. In examinations, identify the known quantities, keep SI units consistent, select a positive direction where needed, and apply the appropriate definition or equation. This also checks that the answer has a sensible magnitude and unit.