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Question
In the previous problem (5.3), the magnitude of the momentum transferred during the hit is ______.
Options
Zero
0.75 kg ms–1
1.5 kg ms–1
14 kg ms–1
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Solution
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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