You will need to multiply the numbers
Answer:
m v^2 / R = G M m / R^2 gravitational attraction = centripetal force
M = v^2 R / G solving for M
period = 6 h 25 min = (6 * 3600 + 25 * 60) sec = 23,100 sec = T
v = 2 pi R / T
M = 4 pi^2 R^3 / (G T^2)
M = 39.5 * (8.6E7)^3 / (6.67E-11 * 2.31E4^2)
M = 39.5 * 636 / (6.67 * 5.34) * 10^24
M = 7.05 * 10^26 kg
Answer:
Explanation:
<em>v = u + at basic kinematic equation</em>
1) a = (v - u)/t = (90 - 80) / 4 = 2.5 km/hr/s
2) a = (v - u)/t = (5 - 20) / 6 = - 2.5 km/hr/s
3) a = (v - u)/t = (4 - 1) / 2 = 1.5 cm/s/s
4) a = (v - u)/t = (20 - 50) / 15 = - 2.0 km/hr/s
5) a = (v - u)/t = (40 - 5) / 6 = - 5.8 m/s/s
6) a = (v - u)/t = (0 - 4) / 0.5 = - 8 m/s/s
7) v = u + at = 0 + 2(16) = 32 m/s
8) t = (v - u)/a = (0 - 80)/-2 = 40 s