Newton’s Second Law corrected the old belief that force is needed to maintain motion. This idea came from the philosopher ______.
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प्रश्न
In the previous problem (5.3), the magnitude of the momentum transferred during the hit is ______.
विकल्प
Zero
0.75 kg ms–1
1.5 kg ms–1
14 kg ms–1
MCQ
रिक्त स्थान भरें
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उत्तर
In the previous problem (5.3), the magnitude of the momentum transferred during the hit is `underline(1.5 kg ms^-1)`.
Explanation:
By the previous solution, `vec(Δp) = - (0.9 hati + 1.2 hatj)`
`|Δp| = sqrt(- (0.9)^2 + (1.2)^2)`
= `sqrt(0.81 + 1.44)`
= 1.5 kg ms–1.
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