Question

E. Answer the following questions.
1. Define force. Is it necessary for the two bodies to be in direct contact for a
force to exist between them? Explain with examples.
2. State three effects of a force. Give suitable examples.
3.
Give reasons for the following statements-
(a) 'Snow shoes' are more effective than ordinary shoes for walking on
Snow.
(b) Porters place a large round piece of cloth on their heads when they
carry heavy loads,
(c) A sharp knife cuts vegetables and fruits more effectively than a blunt
knife.
(d) School bags are provided with wide straps to carry them.
(e) It is much easier to burst an inflated balloon with a needle than
(directly) with the finger.
(f) Mountaineers may suffer from nose bleeding at high altitudes.
(g) Airplanes have pressurised cabins for passenger safety while flying high
in the atmosphere ​

Answer 1

Answer:

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