Posted by **mike** on Monday, February 15, 2010 at 6:17pm.

A 2.5 kg block of ice at a temperature of 0.0 degrees Celcius and an initial speed of 5.7 m/s slides across a level floor. If 3.3 x 10^5 J are required to melt 1.0 kg of ice, how much ice melts, assuming that the initial kinetic energy of the ice block is entirely converted to the ice's internal energy?

(Our teacher doesn't teach us, plus I'm not really geared towards physics. Any help provided would be appreciated.)

- physics -
**drwls**, Monday, February 15, 2010 at 6:40pm
What does your teacher do?

Compute the initial kinetic energy (KE) of the ice using

KE = (1/2) M V^2

You should get 40.6 Joules

Divide that by 3.3*10^5 J/kg to get the number of kg's that melt.

Very little ice melts compared to the mass of the block. No energy goes into raising the temperature because it stays at 0C until it all melts.

- physics -
**mike**, Monday, February 15, 2010 at 7:49pm
I almost forgot to thank you :)

## Answer This Question

## Related Questions

- Physics - A 2.5 kg block of ice at a temperature of 0C and an initial speed of 5...
- physics - A 2.6 kg block of ice at a temperature of 0.0C and an initial speed ...
- physics - The Weistin Stamford Hotel in Detroit is 228 m tall. Suppose a piece ...
- physics - An 8.56 kg block of ice at 0 degrees celsius is sliding on a rough ...
- PHYSICS 102E - 1. How much ice at -10 degrees Celsius is required to cool a ...
- chemisty - get a piece of ice, rub it on your arm until it melts. Do you feel ...
- physics - A 5.0 MULTIPLIED BY 10 TO THE POWER OF 2g aluminium block is heated to...
- Physics - A 2 kg block of ice is placed in a container at 0 °C. How much energy ...
- physics - A 40-g block of ice is cooled to −71°C and is then added to 590...
- physics - A 40-g block of ice is cooled to −71°C and is then added to 590 ...

More Related Questions