Answer:
v = 16.98 km/s
Explanation:
Given that,
Distance, d = 4500 km
Time, t = 265 s
We need to find its average speed. The total distance covered divided by total time taken is called average speed of an object. So,

So, the average speed is 16.98 km/s.
Answer: The value of x is -6.
Explanation:
To calculate the value of 'x', we need to solve each function happening inthe equation.
The equation provided to us is 
To solve this, we will multiply 4x with 2 and then subtract the like terms and finally, we evaluate the value of 'x'.

Hence, the value of x will be -6.
Answer:
You can say that they "change" in speed or "slow" in speed.
Note wavelength where y is the wavelength and N the index of refraction:
N1 y1 = N2 y2
If N1 is air (N1 = 1) and N2 = 1.33 then
y1 = 1.33 y2
Since y2 is less the speed will be smaller
Answer:
, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.