Complete Question
The complete question is shown on the first uploaded image
Answer:
The distance which the car skid is 
Explanation:
From the question we are told that
The initial velocity of the car is 
The coefficient of kinetic friction is 
According to the law of energy conservation
The initial Mechanical Energy = The final Mechanical Energy
The initial mechanical energy is mathematically represented as

where KE is the initial kinetic energy which is mathematically represented as

And PE is the initial potential energy which is zero given that the car is on the ground
Now

Where
is the work which friction exerted on the car which is mathematically represented as

Where
is the distance covered by the car before it slowed down

=> 
Answer:
increases and decreases
Explanation:
the sunspot cycle is a period of time which varies from as short as nine years to as long as fourteen years where the number of sun spots on the sun increases at the beginning of the cycle and then decreases again towards the end of the cycle.
The correct answer would be a molecule
The brick because it has more mass which means more potential energy
Answer:
A state of rest or balance due to the equal action of opposing forces.