Question

III) Read carefully and answer the questions that follow :
Rahul plays outside in the hot sun with his friends and on returning home eats a number of pooris, even though his mother tells him not to. He feels very sick after a while and vomits.

Explain why:
a. Food moves in an opposite direction during vomiting.
b. Suggest three food items that Rahul should have taken and why.

Answer 1

Answer:

The change in velocity in unit time is called acceleration.

Acceleration is a vector.

The direction of acceleration will be in the direction of change in velocity.

Its SI unit is metre / second ² abbreviated as m/s²

Answer 2

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Peristalsis pushes food through the lower oesophagus into the stomach. When the peristaltic movements of the stomach and oesophagus reverse their normal direction, it is called reverse peristalsis. In this situation, the contraction of abdominal muscles and diaphragm pushes food back through the oesophagus and out through mouth which results to vomiting. So, the correct option is C.

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Rahul should have to take curd and rice, vegetables, fruits, greeny leafy curries and home made food.

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