Question

Answer the following questions.

1) A truck that is stopped on the road has to be pushed hard to get into motion.

When the truck is moving a little, it can be moved faster with a smaller /less

push. Why?

02



2) The shape of an aeroplane is not kept the same as the shape of the bus. Why? 03

L.O. Applies learnt scientific concepts in everyday life.​

Answer 1

Answer:

When we push a truck parked along the roadside, then the road implements a static friction force in the opposite direction of force implemented on the truck to oppose the motion of the truck. The static friction is flexible in nature, hence, the road allows only the required amount of friction force to keep the truck at rest. If we apply more force, the road applies more friction force. Hence the friction force cancels out the force applied.

Explanation:

Answer 2

Answer:

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