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R = 7t-1 then find (a) velocity at t=1 second and acceleration at t=2 second |
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Answer» R = 7T - 1 Differtiating both sides with RESPECT to time dr/dt = d(7t-1)/dt VELOCITY = d(7t)/dt - d(1)/dt v = 7 - 0 v = 7 Therefore velocity at any time is 7 Velocity at t=1 is 7 m/s Acceleration = dv/dt =d(7)/dt =0 Therefore acceleration = 0 Therefore velocity = 7 and acceleration = 0 |
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