A projectile is fired straight up at a speed of 15 m/s. How long does it take to reach the top of its motion? the acceleration due to gravity is 9. 8 m/s 2. Answer in units of s.

No because scientist are still changing there mines today so they are not correct to this day

What do you mean there’s no jelly beans

You need to be more specific.  i really don't know what a "motion map" is.you can draw a graph of an object's position, distance, displacement, speed,velocity, or acceleration versus time, or you can draw a graph of the object's x-position versus its y-position and not give any information about time at all.if the graph presents position or displacement against time,  then constant velocity is a straight line . . i.e. a line that has  constant slope.if the graph shows speed against time, then constant velocityis a horizontal piece of line.if the graph shows acceleration against time, then constant  velocity is a piece of line that lies on the x-axis . . it's value is zero.