Guessing (A) because it had the highest velocity number on the graph and it matched 1s
Answer:
GPS Satellites.
Explanation:
You will always be able to have access to 4 of them no matter where you are on the Earth. This is useful for triangulation.
Answer:
velocity of the object
Explanation:
For an object moving at a constant acceleration, we would expect to see a position graph with a curved shape and a velocity graph with a straight shape.
Complete Question
The complete question is shown on the first uploaded image
Answer:
a
b
c
Explanation:
From the question we are told that
The mass of the coal car is
The velocity is
The load of coal dropped is
Generally the momentum of the system before the coal is added is mathematically represented as
=>
=>
Generally from the law of momentum conservation is mathematically represented as
Here is the velocity of the load before it is dropped and the value is 0 m/s
So
=>
=>
When v = 1m/s and remain the same
Then
=>
=>
=>
Refer to the diagram shown below.
Still-water speed = 9.5 m/s
River speed = 3.75 m/s down stream.
The velocity of the swimmer relative to the bank is the vector sum of his still-water speed and the speed of the river.
The velocity relative to the bank is
V = √(9.5² + 3.75²) = 10.21 m/s
The downstream angle is
θ = tan⁻¹ 3.75/9.5 = 21.5°
Answer: 10.2 m/s at 21.5° downstream.