solve this physics question
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1
The correct answer is (1) 44%
Explanation:-
O^2 - V^2 = -2as
or v^2 ∝s ; (v+ 20v/100)^2 ∝s'
or s'/s = (1+20/100)^2 = 36/25 or (s'/s - 1) × 100
= (36/25 - 1) × 100 = 44
Explanation:-
O^2 - V^2 = -2as
or v^2 ∝s ; (v+ 20v/100)^2 ∝s'
or s'/s = (1+20/100)^2 = 36/25 or (s'/s - 1) × 100
= (36/25 - 1) × 100 = 44
sanidhyasingla:
I don't understand
please make me understand
I understand thank you
Did you got it now? If you haven't then you need to solve the question in a sheet. As in my answer the expression aren't well to understand. Hope your query is completely solved.
i didnt get from where did the -1 came?
Answered by
1
v² = 2aS
From above v² ∝ S
(v₁ / v₂)² = (S₁ / S₂)
(100 / 120)² = (100 / S₂)
25/36 = 100 / S₂
S₂ = 100 × (36 / 25)
S₂ = 144
Minimum distance in which it can be stopped is increased by = 144 - 100 = 44%
(1) is the correct option.
From above v² ∝ S
(v₁ / v₂)² = (S₁ / S₂)
(100 / 120)² = (100 / S₂)
25/36 = 100 / S₂
S₂ = 100 × (36 / 25)
S₂ = 144
Minimum distance in which it can be stopped is increased by = 144 - 100 = 44%
(1) is the correct option.
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