engineering recuitment GATE ME 2023-24 Test Series Engineering Mechanics Kinematics and Kinetics Force Mass and Acceleration
The straight line motion of a particle is defined by \(s = \frac{1}{3}{t^3} - 36t\) where ‘s’ is in ‘m’ and ‘t’ is in ‘sec’. Which of the following options are true?
1
Instantaneous acceleration at the 5th second is 10 m/s2
2
When the particle reverses its direction, acceleration is 12 m/s2
3
When the particle reverses its direction, acceleration is 9 m/s2
4
Time at which particle reverses its direction is 6 sec