Answer:
150.5 m
Explanation:
The motion of the car is a uniformly accelerated motion, so we can use the following suvat equation to find the displacement:
where
s is the displacement
u is the initial velocity
t is the time
a is the acceleration
For the car in this problem,
u = 0
Substituting t = 8.9 s, we find the displacement of the car at that time:
Answer: Energy requirement or consumption also increases as frequency goes higher. Hence, those low-frequency to mid-frequency waves are commonly referred to as radio waves and essentially, they have longer wavelengths. On the other hand, microwaves have higher frequencies and shorter wavelengths.
Explanation: therefore that's why they don't travel faster.
The average speed is 0.55 m/s
<h3>What was his displacement?</h3>
Displacement is defined as the change in position of an object.
Mathematically,
D = Initial value - Final Value
D = 30 - 5 = 25m
Now , We have to find the average velocity,
Average velocity is calculated by the formula V = D/t,
where V equals the average velocity, D equals total displacement and t equals total time.
V = D/t
V = 25 m / 45s
V = 0.55 m/s
So , The average speed is o.55 m/s
learn more about average speed:brainly.com/question/9834403
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