Recent content by ireneooi

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    Calculating Horizontal Force to Prevent Rice Packet Slippage

    A shopper picks up a 2 kg packet of rice with the thumb and index finger of one hand.The coefficient of friction between her finger and the wrapping is 0.3.What horizontal force must she exert to prevent the packet from slipping? What I have done for this question I don't know whether the...
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    Kinematic Problem: Solve Traffic Light Stop Distance

    Oh,sorry,I actually just have one problem,which is the acceleration part of the question.Can anyone just explain what it means?Thanks.
  3. I

    Kinematic Problem: Solve Traffic Light Stop Distance

    Hi,really need help with this question. A motorist traveling at 13 m/s aprroaches traffic lights which turn red when he is 25m away from the stop line.His reaction time(i.e. the interval between seeing the red light and applying the brakes)is 0.7s and the condition of the road and his tyres is...
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