Sunday 8 April 2012

1.35

1.35

15 March 2012

10:26
· 1.35 use the relationship between orbital speed, orbital radius and time period:

orbital speed = 2×Π×orbital radius

time period

v = 2×Π×r

T

v = 2×Π×r

T

v = orbital speed (m/s or km/hr)

r = orbital radius (m or km)

T = orbital period (s or hr)

1.35 Plenary Question

15 March 2012

10:29

Pearson, p.56, Q3+4

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· You also need to know that the radius of the Earth's orbit around the sun is 150,000,000km

1.35 Plenary Answers

15 March 2012

10:30

Pearson Answers, p.56, Q3+4

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