If an object is accelerating at a rate of 25 m/s2 how fast will it be moving in 1.50 min

1.5 min = 90 sec

(25 m/s²) x (90 sec) =

(25 x 90) (m - s / s²) = 2,250 m/s .

At the end of 1.5 min of acceleration, the object will be moving 2,250 m/s faster than it was at the beginning of the 1.5 min.

We don't know how fast that is, because you never told us how fast it was moving when the acceleration started.

(I'd stand out of the way of that object if I were you.  2,250 m/s is a little over 5,000 miles per hour !  And that's on top of whatever speed it had before it started accelerating ... at better than 2.5 G's !)

work: w = fd (given)

work done by chet   =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.