Now convert the time from seconds to years- This value is the approximate age of the universe. Write the age in scientific notation. Use the coversion, 1 year = 3.154 times 10^7 seconds.

4.35x10¹⁷s is the age of the universe

Explanation:

The age of the universe is 13.8 billion years.

As we know, 1 billion years = 1x10⁹years

13.8 billion years * (1x10⁹years/ 1 billion years) = 13.8x10⁹ years.

As 1 year = 3.154x10⁷ seconds, 13.8x10⁹ years are:

13.8x10⁹ years * (3.154x10⁷ seconds / 1 year) =

4.35x10¹⁷s is the age of the universe

490 n  f=125n a=2.5m/s2

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.