Question

The position of an object moving along x-axis is given by x = a + bt
2
, where a = 8.5 m and b = 2.5 m s
−2
and t is measured in seconds. The average velocity of the object between t = 2 s and t = 4 s is​

Answer 1

Answer:

t= t2-t1= 4-2=2s

so according to given formula

8.5+ 2.5 × 2

= 8.5+ 5.0

= 13.5m/s