Home » Ask Physics » A problem from Transformation of Energy

A problem from Transformation of Energy

Rosie asks:

“I can’t figure out how to solve this problem:

The total mass of a motorcycle and rider is 250kg. During braking, they are brought to rest from 16m/s in a time of 10s. What is the maximum amount of energy converted into heat by the brakes?

I don’t know whether to use WD = F x d or another set of formula?”

Answer:

This question is based on conservation of energy. The heat energy liberated is equal to the change in kinetic energy. Since the bike is brought to rest, the change in KE is equal to its initial KE.

The answer assumes that the entire KE is converted into heat energy alone.
Heat =Change in KE =

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Hits so far @ AskPhysics

  • 2,271,791 hits

Subscribe to AskPhysics via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 4,337 other subscribers

May 2021
M T W T F S S
 12
3456789
10111213141516
17181920212223
24252627282930
31  

Schrodinger’s Cat in Daily Life

%d bloggers like this: