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Fig. 9.1 shows a large container ship travelling at constant speed in a straight line. Fig. 9.1 The resistive force acti
Posted: Sun Apr 17, 2022 3:53 pm
by answerhappygod
- Fig 9 1 Shows A Large Container Ship Travelling At Constant Speed In A Straight Line Fig 9 1 The Resistive Force Acti 1 (52.42 KiB) Viewed 38 times
Fig. 9.1 shows a large container ship travelling at constant speed in a straight line. Fig. 9.1 The resistive force acting on the ship is 2.8 x 106N. (a) The speed of the ship is 9.7m/s. (1) Calculate the work done against the resistive force on the ship in 1.0s. work done = [2] [2 (iThe engines are powered by oil. State the energy transfer that is taking place when the ship is travelling at constant speed. [2] (b) The mass of the ship is 2.2 x 10kg. The engines are switched off and the resistive force causes the ship to decelerate. (Calculate the initial deceleration of the ship. deceleration = [2]
c) When the ship is travelling at a different speed, energy is being supplied to the engines at a rate of 33 MJ/s. The efficiency of the engines is 0.36 (36%). (1) State a relationship that defines efficiency. [1] (ii) Calculate the rate at which energy is wasted in the engines.