a subway train starting from rest along a straight track has
a subway train starting from rest along a straight track has a uniform acceleration of 1.8m/s2 for the first 20m it travels.
a.calculate its speed when it has traveled 10m.
b.When it has traveled 20m,will its speed be less than double,double,or more than double its speed at 10m?
c.Now calculate its speed when it has traveled 20m .Does this agree with you answer B