How to solve pully type questions in mechanics

T=9g/5 ms^-2m=2 kgtime for higest point = 7/2 sec

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The velocity of a moving body is given by an equation v = 30 - 6t, where v - velocity in m/s, t - time in s. A) What is the acceleration a in m/s^2? B) Find the expression for the displacement s in terms of t given the initial displacement s(0)=10 m.


Find dy/dx in terms of t for the curve given by the parametric equations x = tan(t) , y = sec(t) for -pi/2<t<pi/2.


Find dy/dx when y = (3x-1)^10


find dy/dx= x^2 +x^3


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