A SILLY QUES BT PLZ HELP

WAT WILL B D SPEED OF D IMG?
SPEED OF OBJT IS Vm =3m/s
SPEED OF plane MIRROR IS Vo=2m/s

4 Answers

Is the ans 4 m/s

no
the answer is 7m/s.

106

Asish Mahapatra ·2009-12-08 02:26:26

speed of the image with respect to what?

dx / dt = -5 m/sec

V _IM = dx/dt = -5 m/sec

V _{I G} = V_IM + V _MG
= -5 + (-2) = -7 m/sec

Now, V _{I O} = 2 dx/dt = 2(-5) = -10 m/sec

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