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A motorcycle (mass of cycle plus rider = 3.0 102 kg) is traveling at a steady speed of 20 m/s. The force of air resistance acting on the cycle and rider is 1.8 102 N. Find the power necessary to sustain this speed under the following conditions.

(a) the road is level

(b) the road is sloped upward at 35° with respect to the horizontal

  • physics - ,

    kj jkn

  • physics - ,

    a) P=F*v=1.8x10^2N*20m/s

  • physics - ,

    b) P=(F+mg(sin 35))v

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