Answer:
Shawn's kinetic energy is 20.6 J
Explanation:
We know that kinetic energy is given by the formula [tex](1/2)(mv^2)[/tex]
We are given mass(m) = 50.9kg and
distance ridden by bike = 0.88km which is equal to 880m and
time taken = 16.3 min which is equal to 16.3*60 seconds = 978seconds
Given velocity is constant which is
(v)= [tex]\frac{\text { distance }}{\text { time }}[/tex]
=[tex]\frac{880}{978}[/tex]
= 0.899[tex]ms^-^2[/tex]
Substituting the values we get kinetic energy (k) = [tex]1/2\times(50.9 * 0.899^2)[/tex]
, k = 20.60 kg [tex]ms^-^2[/tex]
as 1J = 1 kg [tex]ms^-^2[/tex]
So, k = 20.60 kg [tex]ms^-^2[/tex] = 20.6 J
