At highway speeds, a particular car is capable of an acceleration of about 1.6 m/s?. At this rate, does it take the car to speed up from 80 km/hr to 110 km/hr? Round your answer to
Two significant figures

Given parameters:

Acceleration of the car = 1.6m/s

Initial speed  = 80km/hr

Final speed  = 110km/hr

Solution:

Time taken to achieve this speed = ?

Solution:

Acceleration is the rate of change of velocity with the time taken.

  Mathematically;

     a  =

where a is the acceleration

           V is the final velocity

           U is the initial velocity

           T is the time taken

Now make the unknown time the subject of the expression;

      aT  = V - U

         T =  

Convert the given acceleration to km/hr;

       1.6m/s  = 1.6 x  x x = 5.76km/hr

Input the parameters and solve;

       T =  = 5.2hrs

The time taken is 5.2hrs

the temperature and the pressure affect solubility. temperature affects by changing the properties of the solvent. the increase in pressure increases solubility, the decrease in pressure decreases solubility.

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.