Posted by **Anonymous** on Saturday, October 13, 2012 at 4:55pm.

A 0.50 kg block initially at rest on a frictionless horizontal surface is acted upon by a force of 8.0 N for a distance of 7.5 m. What is the velocity of the block in m/s?

- physical science -
**bobpursley**, Saturday, October 13, 2012 at 5:07pm
If the movement is in the direction of the force,

KEblock=workputin

1/2 m v^2=8N*7.5m

solve for v

- physical science -
**azzie**, Monday, October 15, 2012 at 12:24am
A 150-L water heater is rated at 8 kW. If 20 percent of its heat escapes, how long does the heater take to raise the temperature of 150 L of water from 10 oC to 60 oC?

- physical science -
**dah**, Thursday, November 21, 2013 at 3:20pm
i don't know

## Answer This Question

## Related Questions

- physical science - A 0.5 kg block initially at rest on a frictionless, ...
- Physics - If a 0.50-kg block initially at rest on a frictionless, horizontal ...
- physics - If a 0.50-kg block initially at rest on a frictionless, horizontal ...
- PHYSICAL SCIENCE - A 0.50-KG BLOCK INITIANALLY ON A REST ON A FRICTIONLESS ...
- Physics Mechanics - A 2.30 kg block is acted upon by a horizontal force F(x) = ...
- physics - A 5.0-kg block at rest on a frictionless surface is acted on by forces...
- Physics - A block of metal, mass m kg, is placed on a horizontal frictionless ...
- Physics 11 - A mass of 10 kg, initially at rest on a horizontal frictionless ...
- physics - A physics student pulls a block of mass m = 23 kg up an incline at a ...
- Physics - A 4.9 kg block initially at rest is pulled to the right along a ...

More Related Questions