Shawn and his bike have a total mass of

Question

52.9 kg.
Shawn rides his bike 1.1 km in
10.9 min at a constant velocity.
The acceleration of gravity is 9.8 m/s?
What is Shawn's kinetic energy?
Answer in units of J. Answer in units of J.

Answer 1

To find Shawn's kinetic energy, we can use the formula:

Kinetic energy = (1/2) * mass * velocity^2

First, let's convert the distance Shawn rides from kilometers to meters:

1.1 km * 1000 m/km = 1100 m

Next, let's convert the time it takes for Shawn to ride the distance from minutes to seconds:

10.9 min * 60 s/min = 654 s

Now, we can calculate Shawn's velocity:

velocity = distance / time = 1100 m / 654 s = 1.68 m/s

Now, let's plug the mass and velocity values into the formula:

Kinetic energy = (1/2) * 52.9 kg * (1.68 m/s)^2
= 0.5 * 52.9 kg * 2.8224 m^2/s^2
= 74.0608 kg * m^2/s^2

Therefore, Shawn's kinetic energy is 74.0608 Joules (J).