Question 6: if the particle moves in a straight line s = 5T square + 3t-1, then the velocity V (2) =? Acceleration α (2) =?

Question 6: if the particle moves in a straight line s = 5T square + 3t-1, then the velocity V (2) =? Acceleration α (2) =?

It is known that s = 5 * T ^ 2 + 3 * T-1
Analysis: if the unit of each physical quantity in the expression in the title is Si system, then the speed is
V＝dS / dt＝10* t＋3　　　m/s
Then V (2) = 10 * 2 + 3 = 23 m / s
The acceleration is a = DV / dt = 10 m / S ^ 2
It can be seen that the acceleration is constant, that is, a (2) = 10 m / S ^ 2

Elden Ring Premiere

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