You can enter units that are combinations of units with prefixes. However, you must maintain the same unit system given in the problem. For example, this question uses the SI unit system. Therefore an answer in U. S. customary units, such as miles per hour would not be accepted as correct. A car traveling with constant speed travels 150 km km in 7200s. What is the speed of the car?

75 km/hr

Explanation:

Parameters given:

Distance travelled = 150 km

Time taken = 7200 secs = 7200/3600 = 2 hrs

The car was moving at constant speed, hence:

Speed = distance/time

Speed = 150/2

Speed = 75 km/hr

total distance travelled = 60 miles

total time taken =1.5 hours

average speed = total distance / total time

60 / 1.5

= 40

therefore, average speed = 40 m/h

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cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation: