The equation for this is very simple you add then you subtract then you get the answer then you divide then it all works out for you
        
             
        
        
        
Answer:
70 revolutions
Explanation:
We can start by the time it takes for the driver to come from 22.8m/s to full rest:

The tire angular velocity before stopping is:

Also its angular decceleration:

Using the following equation motion we can findout the angle it makes during the deceleration:

where  = 0 m/s is the final angular velocity of the car when it stops,
 = 0 m/s is the final angular velocity of the car when it stops,  = 114rad/s is the initial angular velocity of the car
 = 114rad/s is the initial angular velocity of the car  = 14.75 rad/s2 is the deceleration of the can, and
 = 14.75 rad/s2 is the deceleration of the can, and  is the angular distance traveled, which we care looking for:
 is the angular distance traveled, which we care looking for:

 or 440/2π = 70 revelutions
 or 440/2π = 70 revelutions
 
        
             
        
        
        
Our values can be defined like this,



The problem can be solved for part A, through the Work Theorem that says the following,

Where
KE = Kinetic energy,
Given things like that and replacing we have that the work is given by
W = Fd
and kinetic energy by

So,

Clearing F,

Replacing the values


B) The work done by the wall is zero since there was no displacement of the wall, that is d = 0.
 
        
             
        
        
        
Answer:
the total mass is 35 kg 
k.E = 1/2 mv2 
43.76 =1/2 v2 
v2=2×43.76 
Explanation:
v=radicls 87.52 which is equal to 9.5 m/s