127k views
20 votes
Kelly Clarkson is running between the Patronas towers in Kuala Lumpur on a tightrope at a speed of 15 m/s. Kelly currently weighs 79 kg. What is her KE?

User Gontard
by
4.7k points

2 Answers

11 votes

Answer:

KE = 8887.5 J

User Zach Inglis
by
4.5k points
3 votes

KE = 8887.5 J

Further explanation

Given

speed = 15 m/s

weight = 79 kg

Required

KE-Kinetic energy

Solution

Energy is the ability to do work

Energy because its motion is expressed as Kinetic energy (KE) which can be formulated as:


\large {\boxed {\bold {KE = \frac {1} {2} mv ^ 2}}}

Input the value :

KE = 1/2 x 79 kg x 15² m/s²

KE = 8887.5 J

User Agis
by
3.7k points