railway RRB Technician Grade 1 Mock Test 2024 Physics Motion in a Straight Line Average velocity and average speed
The displacement of a particle moving along a straight line is given by \(s={{t}^{3}}+2{{t}^{2}}-7t+2\). The velocity at t = 1 s
1
1 m/s
2
-7m/s
3
4 m/s
4
0