select the correct answer. galileo was the first scientist to do which of the following? a. estimate the…

select the correct answer. galileo was the first scientist to do which of the following? a. estimate the speed of light b. propose the heliocentric theory c. discover radioactivity d. define and measure speed e. invent the reflecting telescope

select the correct answer. galileo was the first scientist to do which of the following? a. estimate the speed of light b. propose the heliocentric theory c. discover radioactivity d. define and measure speed e. invent the reflecting telescope

Answer

Answer:

D. define and measure speed

Brief Explanation:

Galileo defined and measured speed. Others: A - not first for light - speed estimate; B - Copernicus proposed heliocentric theory; C - Becquerel discovered radioactivity; E - Newton invented reflecting telescope.