Answer:
c. that light can travel in a vacuum
Answer:
Explanation:
Step one:
given data
initial velocity u= 40m/s
time taken t=3seconds
final velocity v=?
Step two:
applying the first equation of motion
v=u-gt--- (the -ve sign implies that the arrow is against gravity)
assume g=9.81m/s^2
v=40-9.81*3
v=40-29.43
v=10.57m/s
Step three:
how high the target is located
applying
s=ut-1/2gt^2
s=40*3-1/2(9.81)*3^2
s=120-88.29/2
s=120-44.145
s=75.86m
Very very very high pressures, very etc high temperatures, varying degrees of "carbon purity" and a long time make diamonds diamonds. Minerals ? Well, every so often, should you be lucky, or live in South Africa you might come across one. (Let me know if you do).
