A car starts its motion from rest and accelerates with an acceleration of 3m/s2 speed reaches to 20.0m/sec. Find time interval during this motion.

The time interval is  

Explanation:

From the question we are told that

    The acceleration of the car is  

     The velocity of the car is  

The final velocity of the car can be mathematically represented as

Now since the car start from rest  u = 0 So

substituting values

the gas collects in coils that then becomes a liquid that then flows through the coils inside the refrigerator

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards