well the formula to find speed is distance divided by time and you already have the time so all you need to know to find the average speed of the car is the total distance around the racetrake.
P = VI
Power = Voltage x Current
Isolate for current
P/V = I
16/7 = I
I = 2.28 A
As per the kinematics equation
when glove comes back to his hand the displacement will become zero
Part b)
Now as per symmetric nature the time to reach the top will be same as the time to come back again
so here we can say
so it took 0.61 s to reach the top
<h2>
Answer: The drag force goes up by a factor of 4</h2>
Explanation:
The Drag Force equation is:
(1)
Where:
is the Drag Force
is the Drag coefficient, which depends on the material
is the density of the fluid where the bicycle is moving (air in this case)
is the transversal area of the body or object
the bicycle's velocity
Now, if we assume , and do not channge, we can rewrite (1) as:
(2)
Where groups all these coefficients.
So, if we have a new velocity , which is the double of the former velocity:
(3)
Equation (2) is written as:
(4)
Comparing (2) and (4) we can conclude the Drag force is four times greater when the speed is doubled.