An airplane is flying west at 200 km/h two hours later it is flying west at 300 km/h it's average acceleration is 100 km / hour2 true or false

FALSE

Explanation:

To get the acceleration you would subtract the initial velocity from the end velocity so 300-200 would be 100, then you divide that by the time in this case 2 hours. This leaves you with the average acceleration as 50km/hr.

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.