Velocity<span> is the change in the position of an object, divided by the time. </span>Velocity<span> has a magnitude (a value) and a direction. The unit for </span>velocity<span> is meters per second (m/s).</span>
Answer:
Explanation:
given,
length of the ship = 120 m
length of model of the ship = 4 m
Speed at which the ship travels = 70 km/h
speed of model = ?
by using froude's law
for dynamic similarities
hence, the velocity of model will be 12.78 km/h
Energy divided by time equals power.
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Answer:The mass of ball B is 10 kg.
Explanation;
Mass of ball A =
Velocity of the ball A before collision:
Velocity of ball A after collision=
Mass of ball B=
Velocity of the ball B before collision:
Velocity of ball B after collision=
The mass of ball B is 10 kg.