Posted by **taylor** on Tuesday, February 28, 2012 at 3:34pm.

a person is sled-riding down a hill that is 15.0 ft high. starting at the top with a speed of 10.0 ft/s, the sled reaches the bottom with a speed of 25.0 ft/s. (A) determine whether mechanical energy has been conserved. (B) why might mechanical energy not be conserved?

## Answer This Question

## Related Questions

- physics - You are pulling your sister on a sled to the top of a 20.0 m high, ...
- physics - A 30kg sled(with rider) slides without friction down a small, ice ...
- physics - a sled slides down a frictionless hill. if the sled starts from rest ...
- Physics URGENT!!! - Gayle runs at a speed of 9.00 m/s and dives on a sled, ...
- physics - A child and sled with a combined mass of 45.0 kg slide down a ...
- physics - A child and sled with a combined mass of 48.4 kg slide down a ...
- physics - A child and sled with a combined mass of 47.4 kg slide down a ...
- physics - A child and sled with a combined mass of 53.0 kg slide down a ...
- physics - A child and sled with a combined mass of 47.8 kg slide down a ...
- PHYSICS - Jamal pulls a 150-N sled up a 28.0 degrees slope at constant speed by ...

More Related Questions