Page 4 of 36 Page 4 metadata Page 4 of igcse/edexcel/4ph1-1p-que-20241115.pdf astronomy(22) gravity(8) orbits(12)
Page 5 of 36 Page 5 metadata Page 5 of igcse/edexcel/4ph1-1p-que-20241115.pdf astronomy(22) gravity(8) inverse-square-law(1) orbits(12) speed(23)