Answer:
Surface area of the dog is changes from A to 3A
Explanation:
It is given that surface area of dog is increased by factor 3 in a period of 4 year
We have to find the change in dog's relative surface area in the given time period
Let initially the surface area is A
As the surface area is increased by a factor of 3
So surface area after 4 year = 3×A = 3A
So surface area of the dog is changes from A to 3A
A constant velocity means the acceleration is zero.
Answer:
It does not indicate the car's direction. Since velocity is both magnitude and direction, the speedometer measures speed but does NOT measure velocity
Answer:
The expansion of transport and communication during the 19th century created a need for a unified time-keeping system, and time zones were introduced. ... Before clocks were invented, people kept time using different instruments to observe the Sun's meridian passing at noon.
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