Answer:
running away and launching the anchor that will give a greater speed towards the dock v₄.
Explanation:
To try to bring the boat closer to the dock, several cases can be carried out.
* move inside the ship so that the center of mass changes and since moving away you have a speed v, the ship will approach the dock at a speed v₂,
* Throw the anchor in the opposite direction to the dock so that using the conservation of the moment the boat moves towards it, it moves at a speed v₃
* A combination of the two processes running away and launching the anchor that will give a greater speed towards the dock v₄.
In all cases, the friction must be zero.
All other movements move the ship away from the dock
Answer:
Heat
Explanation:
The given term is nothing but definition of Heat.
Heat is is defined as the energy that is transferred between two bodies which are at different temperatures.It always flows from the body at higher temperature to the body at lower temperature. The SI unit for this is the joule. Generally considered the raising of temperature due to thermal energy.
Answer:
The tires make 125 revolutions before the car stops
Explanation:
Circular and Linear Motion
A tire rotates around a fixed point and the tire when in contact with the ground, drives a vehicle in a linear path. This is an example of a relationship between both types of movements that can be taking place simultaneously.
The car is moving with an initial speed of and then breaks at until it stops. We can compute the time take to stop by using
Solving for t
Putting in numbers
Now, let's transfer this information to the circular motion. We know the tangent speed is
Being w the angular speed and r the radius of the circle, in this case, the tires. The tangent speed is the same as the speed of motion of the car. It gives us the initial angular speed
When the circular motion is not uniform, i.e. there is angular acceleration , the angular speed is a function of time
We can compute the angular acceleration knowing the final angular speed is zero when the car stops.
The rotation angle is also a function of time as shown
Using the given and computed values
Knowing each revolution is radians, the number of revolutions is
The tires make 125 revolutions before the car stops
Answer:
please i dont understand this