The Big Bang, red-shift and the expanding Universe

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Question 30
Medium

Figure 1 shows a graph of the recessional velocity of several distant galaxies plotted against their distance from Earth.

A scatter graph plotting Recessional Velocity on the y-axis against Distance on the x-axis. The y-axis is labelled 'Recessional velocity, v (km/s)' and ranges from 0 to 40,000 km/s. The x-axis is labelled 'Distance, d (Mpc)' and ranges from 0 to 600 Mpc. A straight line of best fit starts at the origin (0, 0) and passes exactly through the point at 500 Mpc on the x-axis and 35,000 km/s on the y-axis.

Calculate the gradient of the line of best fit shown in Figure 1.

State the unit.

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The Big Bang, red-shift and the expanding Universe Questions

  1. GCSE
  2. /Physics
  3. /The Big Bang, red-shift and the expanding Universe