Answer:
Kepler
Explanation:
Kepler discovered that the orbits of planets are ellipses.
Answer:if i know ill tell u
Explanation:
(3) 10.1 second
Using equation of motion 500 = (0.5)(9.81)t^2. Rearranging, t = sqrt(1000/9.81) = 10.1s
Answer: a disadvantage of using a ramp is that it is not safe