Advertisements
Advertisements
प्रश्न
The speed of a train is expressed in m/h.
पर्याय
True
False
उत्तर
This statement is False.
Explanation:
A train's speed is typically expressed in km/h (kilometres per hour) or m/s (meters per second), not m/h (meters per hour).
APPEARS IN
संबंधित प्रश्न
______ is a scalar quantity.
Define Speed.
During circular motion, which physical quantity of the body:
Remains constant
For a body moving along a circular path, show that:
Linear speed = Angular velocity X radius of the circle
On a 120 km track, a train travels the first 40 km at a uniform speed of 30 km/h. How fast must the train travel the next 80 km, so as to average 60 km/h for the entire trip.
In figure the position of a body times is shown . Calculate the speed of the body as it moves from 0 to A, A to B, B to C and i ts average speed .
The SI unit of speed is a kilometer.
In a 100m race, the winner takes 10s to reach the finishing point. The average speed of the winner is ______.
______ measures the instantaneous speed of the automobile.
Assertion: The speed of a body can be Negative.
Reason: If the body is moving in the opposite direction of positive motion, then its speed is Negative.