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In which of the following cases the net ...

In which of the following cases the net force is zero?

A

A drop of rain falling down with terminal velocity

B

A cork of mass 10 g floating on water

C

A car moving with constant speed of 30 `km//hr` on a rough road

D

A charged particle moving parallel to the magnetic field

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D
If `a=0`
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