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(C) 15 sec (d) 18 sec 5 64 7. Two bodies move in a straight line towards each other at initial velocities vị and U2 and with constant acceleration a and a directed against the corresponding velocities at the Bom In initial instant. The maximum initial separation Imax between the bodies for which they will meet during the 20th motion is: youth (U; + v2)? , 2 (az + a) Bolum A - B (c) V1 V2 (d) U- Vaaz (0, -a2) 8. A lift is moving downwards with acceleration a. A man in 1

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