railway RRB Technician Grade 1 Mock Test 2024 Physics Motion in a Straight Line

A particle is moving in a straight line. The variation of position ‘x’ as a function of time ‘t’ is given as x = (t³ – 6t² + 20t + 15) m. The velocity of the body when its acceleration becomes zero is :

1

4 m/s

2

8 m/s

3

10 m/s

4

6 m/s

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