You are riding on your bicycle with inflated tyres. Your friend asks for a lift and sits on the carrier behind
you:
A) The air pressure in the tyres increases
B) The air pressure in the tyres decreases
C) The air pressure in the tyres remains the same
D) Nothing in the system changes except the reaction ofthe ground
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Answer:
nothing in the system changes except the reaction of the ground.
because the friend will exert its weight on the ground and the ground will exert normal reaction to balance it.
Explanation:
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