Q21 Explain the following:
(a) When a train suddenly moves forward, the passenger standing in the compartment tends to fall backwards.
(b) When a corridor train suddenly starts, the sliding doors of some compartments may open.
(c) People often shake branches of a tree for getting down its fruits.
(d) After alighting from a moving bus, one has to run for some distance in the direction of bus in order to avoid falling.
(e) Dust particles are removed from a carpet by beating it.
(f) It is advantageous to run before taking a long jump

Solution

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