How much net force is required to accelerate a 6 kg toy car initially at rest to a velocity of 2m/s in 4s?

3N

Explanation:

Given parameters:

Mass of toy car  = 6kg

Initial velocity = 0m/s

Final velocity  = 2m/s

Time  = 4s

Unknown:

Net force  = ?

Solution:

The net force is given by;

      Force  = mass x acceleration;

     Force  = mass  x  

 v is the final velocity

 u is the initial velocity

 t is the time taken

Now insert the parameters and solve;

  Force  = 6 x   = 3N

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

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