Answer:
The speed of the car to 2 significant figures is .
Further Explanation:
Given:
The distance covered by the car is .
The time taken by the car to cover the distance is .
Concept:
The speed of a car defined as the ratio of the distance and the time taken by the car in covering that distance.
Write the expression for the speed of the car as:
…… (1)
Here, is the speed of the car.
The distance covered by the car in meters is.
Substitute the values in the above expression.
Thus, the speed of the car to 2 significant figures is .
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Answer Details:
Grade: Middle School
Chapter: Speed and distance
Subject: Physics
Keywords: Speed, velocity, distance, time, distance of 150 km, in 7200 s, speed of the car, ratio of distance, rate of change of distance, 20.83 m/s, 21m/s.