Question

SIWA QUES PRACTISE NOW 6 Exercise A train started from station P and travelled to station 2, 7.6 km from P. The table below shows the readings of the time, in minutes, since leaving station P and the corresponding distance, in km, from P. 7.6 2 1 3 4 5 6 7 8 Time (in minutes) 0.2 0.8 2.6. 5.0 6.5 7.2 7.5 Distance (in km) (a) Using a scale of 2 cm to represent 2 minutes on the horizontal axis and 2 cm to represent 2 km on the vertical axis, plot the points given in the table and join them with a smooth curve. (b) Use your graph to estimate the time taken to travel the first 4 km of the journey. (c) By drawing a tangent, find the approximate speed of the train 6 minutes after it has left station P. (d) By considering the gradient of the graph, compare and describe briefly the motion of the train during the first 4 minutes and the last 4 minutes of the journey.​

Answer 1

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