Abicyclist is travelling at 25 m/s when he begins to decelerate at -4m/s2 . how fast is travelling after 5 seconds

Initial velocity (Vi) = 25 m/s

acceleration (a) =

time interval (t) = 5 sec

let us assume that final velocity after 5 sec be Vf

As acceleration is constant, we can apply the the equation of motion with constant acceleration i.e.

Hence,

so, the velocity of bicyclist will be 5 m/s after 5 sec

the answer is d. 4

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molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.