what is the displacement of a car in 30s lf it travelling with a velocity of 15m/s
400m, 450m, 500m
Answers
Explanation:
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Answer:
Read the answer nd than write
Explanation:
If you thought the answer is 450 , I regret being the one to inform you that you are wrong. Not entirely wrong though.
All of you straight away assumed that the car is moving in a straight line so you simply multiplied 15 and 30 to get 450. Now this is an extremely ideal case where you have assumed that the car continues moving in the same direction throughout the duration of 30 seconds.
But what if the car was moving in a circle with circumference 450m?
Then the displacement in 30 seconds would be 0 metres as the car would have returned to its starting point.
What if the car went forward for 20 seconds and then backward for 10 seconds?
Then the displacement would be 20*15 - 10*15 = 150 metres.
Now that I have given you this hint, use your creativity to figure out why the actual answer is 0 to 450 metres(both inclusive)
If you are a physics student , I am sure you would like to point out that I missed out on the whole range of -ve values for displacement , but I am referring only to the magnitude of the displacement.