Answer:
Graph C
Explanation:
This is the answer because it is the only one that shows the vehicle accelerate to a constant speed before stopping and slowing down.
Answer:
Explanation:
From the question we are told that
Velocity if travel 
Diameter of prototype 
and 
Scale ratio=
Generally Velocity of of the model using Froud's model is mathematically given as
Answer:
C
Explanation:
A theory can be changed when new evidence is found. A law doesn't change because it is universally a fact. It doesn't need new evidence to support it.
Answer:
62.1 kg
Explanation:
Weight = mass × acceleration
609 N = mass × (9.8)
The acceleration is 9.8 because that is the acceleration of gravity.
Divide both sides by 9.8 to isolate the mass.
609N/9.8 = mass
62.1 kg =mass
