The second one is the correct answer
The ball's velocity
at time
is

where
is the acceleration due to gravity. So after 1.5 seconds, the ball's velocity is


so the ball's speed after 1.5 seconds is also 49.5 m/s.
Answer:
7.22
Explanation:
h = energy/mass * gravity
h = 566 / 8 * 9.8
h = 7.219388
Answer:
The planet follows the ellipse in its orbit, meaning that the planet to Sun distance is constantly changing as the planet goes around its orbit. Kepler's Second Law: the imaginary line joining a planet and the sons sweeps equal areas of space during equal time intervals as the planet orbits.
(Brainliest, please?)