Answer:
5000 km
Explanation:
At the highest point, the velocity would be zero. v = 0
Initial speed, u = 9.9 km/s
Use the third equation of motion:
[tex]s =\frac{v^2-u^2}{2a}[/tex]
a= -g (acceleration due to gravity acts downwards)
substitute the given values:
[tex]s =\frac{0^2-(9.9\times 10^3)^2}{-2\times 9.8}\\ s=5\times 10^6 m = 5000km[/tex]
