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6 The co-ordinates of a moving particle at a time t, are5 cos 10t. The speed of thegive by, x 5 sin 10 t,yparticle is: |
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Answer» speed in x direction is dx/dt = 5*cos(10)t.10 = 50cos(10)t speed in y direction is dy/dt = 5*10*-sin(10)t so , speed is = √50²cos²(10t)+50²sin²(10t) = 50√2. |
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