In this given problem, to solve for the acceleration we have to
assume that the acceleration is constant. This assumption helps us understand
that the velocity of Dave follows a linear increase and hence we can use the
formula below for calculating the acceleration:
a= (Vf – Vi) / t
where
Vf = final velocity = 7.0 m / s
Vi = intial velocity = 3.0 m / s
t = time elapsed = 10 s – 5 s = 5 s
Substituting the known values into the equation:
a = (7.0 m / s – 3.0 m / s) / 5 s
a = 0.8 m / s^2
Answer:
<span>D. 0.8 m/s2</span>
Katie should watch what she eats, this is because a lot of teenagers eat a large amount of junk food an average per day. Katie should also do a lot of exercise so that her body grows healthy and strong! Katie should choose vegetables and fruits and food filled with nutrients for the body, Katie should also not listen to negative peer pressure but use positive peer pressure to her advantage.
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