Abullet is fired horizontally with an initial speed of 208 m/s at a height of 1.98m above the ground. how long will it take the bullet to hit the ground?

It take the bullet 0.64 seconds to hit the ground.

Explanation;

 We have equation of motion , , s is the displacement, u is the initial velocity, a is the acceleration and t is the time.

Here we need to consider only vertical motion of bullet.

Initial velocity = 0 m/s, Displacement = 1.98 m, acceleration = acceleration due to gravity = , we need to find time taken

Substituting

   It take the bullet 0.64 seconds to hit the ground.

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.