A train is moving at a speed of 72 km/h. Find its acceleration and distance covered if driver applied brakes and the train stops in 40 sec of time. Plot the graph of train motion on v-t graph.
Answers
Answer:
1. An object has moved through a distance. Can it have zero displacement? If yes, support your answer with an example.
Answer: An object can have zero displacement even when it has moved a distance and shown some displacement. This takes place when the final position of an object coincides with its own initial position. Let's say, if a person moves around circular area and comes back to the place from where he started then the displacement will be zero.
Answer:
the answer I told you in the explaination part.
Explanation:
speed of the train = 72 km/hr
driver applied brake for = 40 secs
converting sec into hour = 40/60×60
= 1/15 hour
Therefore, Distance covered = speed × Time
= 72×1/15
= 24/5
= -4.8 km.
Therefore, the train is in retardation = 4.8 km.
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