nswer 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.
Q-5 Answer the following questions.
1) As a football player, you would choose to wear a flat bottom shoes or shoes
with nails to play on the fields. Why?
03
2) Should girls cook during menstrual days or not? Why?
Answers
Answer:
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.
Q-5 Answer the following questions.
1) As a football player, you would choose to wear a flat bottom shoes or shoes
with nails to play on the fields. Why?
03
2) Should girls cook during menstrual days or not? Why?
Answer:
1) First, let give the both statement or conditions as statement (i) and statement (ii).
The above condition is because when the truck is in the rest and no force is acting on it then gravity has hold the truck. There is no force applied on a truck, then there is no acceleration and there is no velocity. So, when the truck is already in motion and is pushed then it move faster with less push as compare to statement (i).
An object which is already in motion is easy to move with less push as compare to object at rest.
The energy needed to push an object which is in rest is required more as compared to moving object. This is the reason that a truck that is stopped on the road has to be pushes hard to get into motion whereas a truck already moving a little can be moved faster with a smaller/less push.
2) An airplane or aeroplane (informally plane) is a powered, fixed-wing aircraft that is propelled forward by thrust from a jet engine, propeller or rocket engine. Airplanes come in a variety of sizes, shapes, and wing configurations. The broad spectrum of uses for airplanes includes recreation, transportation of goods and people, military, and research.
The plane is meant for flying because of its large (flat)area
and its engine that creates lift and thrust
Q-5) Answer the following questions.
1) shoes with nails to play on the field because you can get a perfect grip on the ground which the flat bottom which the flat bottom shoes can't provide .
2) A girl, after she reaches puberty is barred from entering the prayer room or performing any religious prayers during her menstruation. The only reason mentioned in our scriptures is that she is (ashudha) unclean during that period.
During ancient days, women would take bath in the river, pond or near the well. During the time when the girl would be menstruating, it would be awkward to bathe outside in the river as it would probably ‘pollute’ the water.
So, the ladies did not take bath. Since the ladies did not take bath, they were naturally termed ‘unclean’ during that time. Hence, their being barred from the clean’ places in the house, namely the prayer room or the kitchen.
However, Science has a different meaning for the menstruation. As per science, a woman is more irritable during those days because of a hormonal imbalance. Psychics claim that there is a different aura around a menstruating woman, maybe again a chemical reaction.
Segregating to pray requires a positive attitude and people tend to respond to the negative vibrations of a person standing with you; maybe that was the reason why a woman was barred from public places of prayer during these days.
Hope it helps you :)
Explanation: