Question

A block is placed on a platform which is kept
on the ground. After a while, the platform
starts moving. If the velocity of the block with
respect to ground is the same as that of the
platform with respect to the ground, then
which of the following statement(s) is/are
correct?
(i) Kinetic friction acts between the ground
and the platform.
(ii) Kinetic friction acts between the ground
and the block.
(iii) Kinetic friction acts between the platform
and the block.
a Only (1)
b only (iii)
c Both (i) and (iii)​

Answer 1

Answer:

(i) Kinetic friction acts between the ground

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