Answer:
• Its acceleration is zero
Explanation:
from definition of acceleration:

• since velocity is constant, change in velocity is zero

• therefore:

∆v = -5 m/s
∆t = 5 s
a = ∆v/∆t = (-5 m/s)/(5 s) = -1 m/s^2 .
I know that's the right answer.
I THINK that's what choice-B is trying to say.
Answer:
Galileo
Explanation:
Galileo Galilei pioneered the experimental scientific method, and was the first to use a refracting telescope to make important astronomical discoveries. He is often referred to as the "father of modern astronomy" and the "father of modern physics". Albert Einstein called Galileo the "father of modern science."
Answer:
Gravity is one major force that creates tides. In 1687, Sir Isaac Newton explained that ocean tides result from the gravitational attraction of the sun and moon on the oceans of the earth (Sumich, J.L., 1996).
Explanation:
I hope this helps.