science (force and motion)

explain how accceleration can be slowing down.

Calculate the impact force of a 50 kg object travelling at 100km/hr?

-> i was wondering if you can answer directly and not through hyperlinks... thank you

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asked by sarah
  1. Consider the contact surface and the friction force.

    Sorry on the "calculate" because any math is NOT in my area of expertise!

    Sra

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