22) Position -Time relation of a body is given as x(1)-21²-51-6 Find a velocity of the body at 2 second b)Displacement of the body in 5 second c)Acceleration of the body.

22) Position -Time relation of a body is given as x(1)-21²-51-6 Find

1.	22) Position -Time relation of a body is given as x(1)-21²-51-6 Find a velocity of the body at 2 second b)Displacement of the body in 5 second c)Acceleration of the body.
Answer» Velo = 3 m/s, DISPLACEMENT =25m accln = 4 m/s²Explanation:x(t) = 2t² - 5t -6V = dx/dt = 4t -5a = dx²/dt² = 4a) velocity at 2 SEC = [dx/dt] at t =2 = 4x2 - 5 = 3 m/sb) Position when t = 0 is x₀ = -6 m Position when t= 5 s x₅ = 2x 25 - 5x5 -6 = 50-25-6 = 19 m∴ Displacement in 5 sec = x₅-x₀ = 19-(-6) = 25 mc) accln of body is constant, a = 4 m/s²

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22) Position -Time relation of a body is given as x(1)-21²-51-6 Find a velocity of the body at 2 second b)Displacement of the body in 5 second c)Acceleration of the body.​

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22) Position -Time relation of a body is given as x(1)-21²-51-6 Find a velocity of the body at 2 second b)Displacement of the body in 5 second c)Acceleration of the body.