A particle of mass 15 kg and initial velocity v _ i = i -2 j m/s. It collides with…
Physics · JEE Main · NTA Exams — Laws of Motion
A particle of mass 15 kg and initial velocity \(\bar{v}_{i}=\hat{i}-2 \hat{j}\) m/s. It collides with another body and the impact time is 0.1 s, resulting in a velocity \(\overline{\mathrm{v}}_{\mathrm{f}}=6 \hat{\mathrm{i}}+4 \hat{\mathrm{j}}+5 \hat{\mathrm{k}}\) m/s after impact. The average force of impact on the particle is :
- \(15|5 \hat{\mathrm{i}}+6 \hat{\mathrm{j}}+5 \hat{\mathrm{k}}|\)
- \(15|5 \hat{i}+6 \hat{j}-5 \hat{k}|\)
- \(150|5 \hat{i}-6 \hat{j}+5 \hat{k}|\)
- \(150|5 \hat{i}+6 \hat{j}+5 \hat{k}|\)
Answer
(D) 150|5 i +6 j +5 k |
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