A particle is moving in free space with some velocity as shown. It is applied by force F→1,F→2 and F→3 of magnitude 10N, 10N and 15N respectively :

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its velocity changes only in magnitude

its velocity changes only in direction

its velocity changes in both magnitude and direction

its velocity remains constant

answer is C.

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Detailed Solution

Velocity makes some angle with resultant F , thus both magnitude and direction changes.

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