Q3 of 30 Page 102

What does the odometer of an automobile measure?

Odometer is a device that measures the distance travelled by an automobile based on the perimeter of the wheel as the wheel rotates. The odometer gives us only the number it does not show us the direction of velocity. The odometer measure the scalar quantity – the speed of the car.


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1

Distinguish between speed and velocity.

 2

Under what condition(s) is the magnitude of average velocity of an object equal to its average speed?

 4

What does the path of an object look like when it is in uniform motion?

 5

During an experiment, a signal from a spaceship from the ground station, the signal travels at the speed of light i.e., 3×108 m s-1.