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  1. A boat of mass 40 kg is at rest.A dog of mass 4 kg moves in the boat
  2. The equations of motion of a projectile are given by x=36 t metre and 2y=96t-9.8t²
  3. A black body at a temperature of 227⁰C radiates heat at a rate of 20 cal m⁻²s⁻¹.
  4. A particle moves along with x-axis.The position x of particle with respect to time
  5. With what minimum acceleration can a fireman slide down a rope while breaking