The velocity of the ferry relative to the current is 4.5 m/s.
<h3>Relative velocity</h3>
- Relative velocity is the velocity of a body as observed from the reference point of another body either stationary or in motion.
Since the river is flowing parallel to the shore and the ferry is moving perpendicular to the shore, their velocities are at right angles to each other.
The two velocities form a right angled-triangle of sides 2, 4 and a hypotenuse which gives the relative velocity of the ferry to the current.
Using Pythagoras rule:
- Let c be the hypotenuse
- a = velocity of the ferry, and
- b = the velocity of the current, and
c² = 4² + 2²
c² = 16 + 4
c = 20
c = √20
c = 4.47 m/s
c ≈ 4.5 m/s
Therefore, the velocity of the ferry relative to the current is 4.5 m/s.
Learn more about relative velocity and Pythagoras rule at: brainly.com/question/25617868
Multiply 25 * 8 = 200
So the cheetah has gone 200 miles in 25 seconds
Answer:
The value is 
The force will be outward
Explanation:
From the question we are told that
The diameter of the disk is 
The external pressure on Mars is 
From the question we are told that
Internal pressure = External pressure
Generally the external Force on earth is
Here 
is the atmospheric pressure with value 
So
=> 
=> 
Generally the external Force on Mars is
=> 
=> 
Net force is mathematically represented as
=> 
=> 
converting to pounds
=>
Given that that the value is positive then the force will be outward
Answer:
28.6 ohm
Explanation:
there is a 3rd resistor in series. voltage drop across the resistors will be equal to 60v
7*.2+7*.2 +.2x = 60
2.8+.2x = 60
.2x = 57.2
x = 28.6
