Answer:
The coefficient of rolling friction will be "0.011".
Explanation:
The given values are:
Initial speed,

then,


Distance,
s = 18.2 m
The acceleration of a bicycle will be:
⇒ 
On substituting the given values, we get
⇒ 
⇒ 
⇒ 
⇒ 
As we know,
⇒ 
and,
⇒ 
⇒ 
On substituting the values, we get
⇒ 
⇒ 
False
Energy in the form of motion is kinetic energy
Stored energy is called potential energy
Answer:
600 Joules
Explanation:
Using the formula F*d*cosФ. Assuming the Ф is parallel to the motion. The work done is 600 Joules.
Answer:

Explanation:
We have an uniformly accelerated motion, with a negative acceleration. Thus, we use the kinematic equations to calculate the distance will it take to bring the car to a stop:

The acceleration can be calculated using Newton's second law:

Recall that the maximum force of friction is defined as
. So, replacing this:

Now, we calculate the distance:

It increases
Explanation:
A circuit's resistance increases as more resistors are added to it in series.
Series connection of circuit provides an additive increase in the resistance offered by the overall circuit.
A resistor is a device in a circuit that impedes the flow of electric current. It simply uses electric current.
Examples are bulbs, radio, television.
The more of these devices connected one to another in series, the more the resistance increases.
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