Answer:
The system's potential energy is -147 J.
Explanation:
Given that,
Energy = 147 J
We know that,
System is isolated and it is free from external forces.
So, the work done by the external forces on the system should be equal to zero.

We need to calculate the system's potential energy
Using thermodynamics first equation

Put the value into the formula


Hence, The system's potential energy is -147 J.
 
        
             
        
        
        
Answer:
D. The momentum of Car B is three times as great in magnitude as that of car A.
Explanation:
I majored in Physics
 
        
             
        
        
        
Earth’s tilt from its axis. 
For explanation:
The angle in which Earth is at is 23.5°. This causes its tilt which affects how the Sun’s light hits Earth
 
        
        
        
Answer:
Explanation:
Given
car A had a head start of 
and it starts at x=0 and t=0
Car B has to travel a distance of 
where  is the distance travel by car A in time t
 is the distance travel by car A in time t
distance travel by car A is 

For car B with  speed 



 
        
             
        
        
        
Answer:
 α = 13.7 rad / s²
Explanation:
Let's use Newton's second law for rotational motion
          ∑ τ = I α
          
we will assume that the counterclockwise turns are positive
          F₁  0 + F₂ R₂ - F₃ R₃ = I α
give us the cylinder moment of inertia
         I = ½ M R₂²
          
         α = (F₂ R₂ - F₃ R₃)  
let's calculate
         α = (24  0.22 - 13  0.10)  2/12 0.22²
2/12 0.22²
         α = 13.7 rad / s²