The trip time taken by the box is 1.5 sec.
Explanation:
Given:
distance(d) = 30 m
Velocity(v) = 20 m/s
By using formula:
Velocity = [tex]\frac{distance}{time}[/tex]
or, 20 = [tex]\frac{30 }{time}[/tex]
or, time(t) = [tex]\frac{30}{20}[/tex]
∴ time (t) = 1.5 sec
Hence the the block took 1.5 sec to slide 30 m.