Question

Shawn and his bike have a total mass of
52.3 kg. Shawn rides his bike 1.6 km in
17.4 min at a constant velocity.
The acceleration of gravity is 9.8 m/s
2
.
What is Shawn’s kinetic energy?

Answer 1

The kinetic energy is 61.2 J

Explanation:

First of all, we calculate the average velocity of Shawn. This is given by:

$v=\frac{d}{t}$

where

d = 1.6 km = 1600 m is Shawn's displacement

t = 17.4 min = 1044 s is the time interval

Therefore, the average velocity is

$v=\frac{1600}{1044}=1.53 m/s$

Now we can find Shawn's kinetic energy, which is given by:

$K=\frac{1}{2}mv^2$

where

m is the mass of Shawn and his bike

v is his velocity

Here we have:

m = 52.3 kg

v = 1.53 m/s

Substituting,

$K=\frac{1}{2}(52.3)(1.53)^2=61.2 J$

Learn more about kinetic energy:

brainly.com/question/6536722

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