Do you think conditions in a subsurface mining could be safe 50 years from now, with new technology being used and new ideas being used on the design of mines.

the answer is 46 mls because when you add the speed per second it increses the speed

d

explanation:

v=uf/(u-f)

= 5.10/(5-10) convex lens has positive focal length

=50/-5

=-10 cm (formed at other side)

uranium fissions/breaks up giving out energy and neutrons

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer