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The equation of motion of a point in spa...

The equation of motion of a point in space is x = 2t, y = – 4t, z = 4t ,where 't' is measured in hours and the coordinates of moving point in kilometers. The distance of the point from the starting point O (0,0,0) at the end of 10hours is

A

20km

B

40km

C

60km

D

55km

Text Solution

Verified by Experts

The correct Answer is:
c
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