53 (a) State Newton's laws of motion. Explain how the newton is defined from these laws.
53 (a) State Newton's laws of motion. Explain how the newton is defined from these laws.
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Transcribed Image Text:A63 (a) State Newton's laws of motion. Explain
how the newton is defined from these laws.
(b) A rocket is propelled by the emission of
hot gases. It may be stated that both the
rocket and the emitted hot gases each gain
![kinetic energy and momentum during the
firing of the rocket.
Discuss the significance of this statement
in relation to the laws of conservation of
energy and momentum, explaining the
essential difference hetween' these two
quantities.
(c) A bird of mass 0.50 kg hovers by beating
its wings of effective area 0.30 m?.
(i) What is the upward force of the air
on the bird?
(ii) What is the downward force of the
bird on the air as it beats its wings?
(ii) Estimate the velocity imparted to
the air, which has a density of
1.3 kg m ', by the beating of the
wings.
Which of Newton's laws is applied in each
of (i), (ii) and (ii) above?
[L]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5a6d9c67-6f13-49d2-ac4d-2d996f90a88b%2Fc64b7184-7160-4076-a611-cf9d50b4846e%2Fy4nvt79_processed.jpeg&w=3840&q=75)
Transcribed Image Text:kinetic energy and momentum during the
firing of the rocket.
Discuss the significance of this statement
in relation to the laws of conservation of
energy and momentum, explaining the
essential difference hetween' these two
quantities.
(c) A bird of mass 0.50 kg hovers by beating
its wings of effective area 0.30 m?.
(i) What is the upward force of the air
on the bird?
(ii) What is the downward force of the
bird on the air as it beats its wings?
(ii) Estimate the velocity imparted to
the air, which has a density of
1.3 kg m ', by the beating of the
wings.
Which of Newton's laws is applied in each
of (i), (ii) and (ii) above?
[L]
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