Option 4 : remains constant
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10 Questions 40 Marks 10 Mins
CONCEPT:
- Distance (s): The total distance travelled by an object from a starting point is called path length. Thus the total path length of an object is called distance travelled by that object.
- It is a scalar quantity.
- The SI unit of distance is meter (m).
- Speed (v): The rate of change in distance is called speed. It is also a scalar quantity.
Speed (v) = ds/dt
Where t is time
CALCULATION:
Given that:
The distance travelled by a body is proportional to time.
So distance (s) = kt
where k is a constant and t is time
Speed (v) = ds/dt = d(kt)/dt = k (Constant)
Thus speed remains constant. So option 4 is correct.
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