Question

A train travels 76 kilometers in 4 hours, then travels 63 kilometers in 4 hours. What is its average speed?

Answer 1

Where speed is given by

\[v(t)=\frac{ x_f(t) - x_i(t) }{ t_f - t_i }\]

ti = 0 since you were not given a specific initial time.

Answer 2

The average speed is given by the formula-

So it should be-
76+63/4+4
can you do it now?

Answer 3

so it will be 19.7 km/hr

Answer 4

or maybe 17.375 km/hr is more precise.