The average velocity is 20 km/h west
Explanation:
The velocity of an object is given by:
where
d is the displacement
t is the time elapsed
The displacement of an object is a vector connecting the initial position and the final position of motion.
In this problem, the car moved
40 km East
80 km West
Therefore, the displacement is given by (taking West as positive direction)
West
The time elapsed is
t = 2 h
Therefore, the average velocity is
in the West direction.
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Answer:
The force on one square foot of the earth’s surface caused by the atmosphere is 101.4 kN.
Explanation:
To force is given by:
(1)
Where:
P: is the pressure = 14.7 lb/in²
A: is the area = 1 m²
By entering the above values into equation (1) we have:
Therefore, the force on one square foot of the earth’s surface caused by the atmosphere is 101.4 kN.
I hope it helps you!
Answer:
176J
Explanation:
the explanation is that before the cat hits the ground the amount of kinetic energy builds up making it so that there is more energy
Kinetic Energy:
Kinetic Energy is the energy of motion.
Mass:
Mass is the number of particles that a substance has
I think the correct graph would be
the THIRD GRAPH
Answer:
5. The 2 features we need to harness the energy from tides are when tides come in and when tides come out.
6. Tidal energy is the most predictable type of renewable energy is because we know the exact locations of the sun and moon all year round.
