A situation is shown in which two objects A and B start the…

Physics Motion in a Straight Line Mix Numeric Response

Published on: September 12, 2026

A situation is shown in which two objects A and B start their motion from same point in the same direction. The graph of their velocities against time is as shown. U A and U B are their initial velocities of A and B respectively. "T" is the time at which their velocity become equal after start of motion. You cannot use the data of one question while solving the other question. So all the three questions are independent.

(i) If the value of T is 4 sec then the total time after which A will meet B-

12 sec 5 m/sec 12 m/sec

6 sec 10 m/sec 10 m/sec

8 sec 15 m/sec 15 m/sec

Date insufficient (ii) Let v A and v B be the velocities of the particles A and B respectively at the moment A and B meet after the start of motion. If U A and U B are 5 m/sec and 15 m/sec respectively then the magnitude of difference of velocities v A and v B is- Data insufficient (iii) After 10 second of the start of motion of both objects A and B. Find the value of velocity of A if U A = 6 m/sec; U B = 12 m/sec and at T velocity of A is 8m/sec and T is 4 sec – None of these

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Ans.

(i)

Sol. 8 sec

(ii)

Sol. 10 m/sec

(iii)

Sol. Use equation of kinematics.

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