Verified answer

The average speed : 0.83 m/s

Further explanation  

Linear motion consists of 2: constant velocity motion with constant velocity and uniformly accelerated motion with constant acceleration  

At constant velocity motion:  

the speed of vo = v = constant  

acceleration = a = 0  

Δx = vt or x = xo + vt  

An equation of constant velocity motion  

d = v x t  

d = displacement

for average speed :

Given

time = 30 min = 1800 second

total distance = 1.5 km = 1500 m

Required

The average speed

Solution

average speed :

= d : t

= 1500 m : 1800 s

= 0.83 m/s

Learn more  

The average speed for the whole journey

brainly.ph/question/1339158

uniformly accelerated motion  

brainly.ph/question/2132892  

the probe’s velocity relative to the earth  

brainly.ph/question/1467317  

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