Earth rotates eastward with linear speed at the equator
PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
Earth rotates eastward with linear speed 0.46km s−1 at the equator. Ignoring air resistance, what minimum launch speed relative to Earth’s surface must a rocket provide to escape when launched vertically from the equator? (Escape speed from the surface is 11.2km s−1.)
(a) 10.7km s−1
(b) 11.7km s−1
(c) 11.2km s−1
(d) 11.0km s−1