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The acceleration time graph (at) of a particlemoving with initialspeed of 45 m/sbelow.the velocity of a body at t = 20s isomis showna cms 2)- 2 |
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Answer» Explanation: Given : V i = 2m/s at t=0 s Let V f be the velocity of the particle at t=4 s Area under the a-t graph GIVES the CHANGE in velocity of the particle during that period. ∴ ΔV = V f − V i
= 1 ×4×4 = 8 2 OR V f −2=8 ⟹V f = 10m/s |
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