please answer the 3 questions...(4, 7 ,8) with Step by step expanation... the best answer will be marked as brainliest...+25❤️..
Answers
Answer:
4) 49 Newtown of force act in vertically downward direction on 5 kilometres body
as we know that according to Newtown second law of motion
F=mg
where F=force of gravity
m= mass of the object
g= acceleration due to gravity
by putting value which are given in the question in this equation we get
F=9.8×5N
F=49N
and force of the gravity acts in down direction
7). the weight of the man on the earth=600N
weight=mass ×gravity
600N= mass×9.8m/square
mass=600\9.8=61.22kg (approximately)
mass of the man =61.22kg
given gravity on the moon=1\6of gravity on the earth
therefore
gravity on the moon=1\6×9.8
=1.63m/s
weight of man on the moon=mass of the men × gravity on the moon
=61.22×1.63
=99.99 N (approximately)
=100 N
8) (A)
F=ma
= 10.5×10
= 105N
(B)
W=mg
= 10.5×10
=105N
Explanation:
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Answer:
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