Answer:
The centripetal acceleration at highway speed is greater.
Explanation:
We assume the motion of the car is uniformly accelerated. Let the highway speed be v.
By the equation of motion,
u is the initial velocity, a is acceleration and t is time
Because the car starts from rest, u = 0.
This is the tangential acceleration of the thread of the tire.
The centripetal acceleration is given by
r is the radius of the tire.
Comparing both accelerations and applying commonly expected values to r and t, the centripetal acceleration is seen to be greater. The radius of a tyre is, on the average, less than 0.4 m. Then the centripetal acceleration is about
The tangential acceleration can only be greater in the near impossible condition that the time to attain the speed is on the order of microseconds.
Answer:
D
Explanation:
A) gravity
B) force of the diver
C) air blowing out from the hockey table
D) has no know outside Force acting on it
Example: The frozen biome was covered in thick white snow. The air was chilled and you could see an arctic fox occasionally.
<h2>
Answer: decreases</h2>
Every substance, body or material has mass and volume, however the mass of different substances occupy different volumes.
This is where density 
appears as a physical characteristic property of matter that establishes a relationship between the mass 
of a body or substance and the volume 
it occupies.
So, according to this equation, the density is inversely ptoportional to the volume:
If the volume increases, the density decreases.
This is what a fish does to have buoyancy, since the density of a body is related to its buoyancy:
A body will float on another fluid if its density is lower.
<h2>This is what the fish does when it expands its air bladder, incrementing its volume, hence decreasing its density.</h2>
