Question

1. A bicycle and rider with a combined mass of
115 kg are traveling at a speed of 8 m/s. What is the kinetic energy of the bicycle and rider?

Answer 1

3680 J

Step-by-step explanation:

The kinetic energy of an object is given by:

where

m is the mass of the object

v is the speed of the object

In this problem, we have

m = 115 kg is the combined mass of the bycicle and the rider

v = 8 m/s is the speed

Substituting numbers into the formula, we find

Answer 2

3680 J

Step-by-step explanation:

The kinetic energy of an object is given by:

`K=(1)/(2)mv^2`

where

m is the mass of the object

v is the speed of the object

In this problem, we have

m = 115 kg is the combined mass of the bycicle and the rider

v = 8 m/s is the speed

Substituting numbers into the formula, we find

`K=(1)/(2)(115 kg)(8 m/s)^2=3,680 J`