Posted by **Cathy** on Friday, February 23, 2007 at 2:07am.

A 17.0 kg child travels down a playground slide 3.50 m high and reaches the bottom with a speed of 2.50 m/s. How much heat was generated due to friction as a result of this process?

my teacher hadn't taught anything about heat..but he did give us this question, thus, i got no idea with this question. please help. thanks a lot.

The heat generated equals the amount of (kinetic + potential) energy lost. That is because of the law of conservation of energy.

In this case, M g H = 17x9.8x3.5 = 583.1 J of potential energy is lost while the kinetic energy increases by (1/2)x(17)x(2.5)^2 = 53.1 J. The rest of the potential energy loss, 530 J, is converted to heat

## Answer this Question

## Related Questions

- Physics - A 21.0 kg child descends a slide 3.4 m high and reaches the bottom ...
- Physics - A 17 kg child descends a slide 3.5 m high and reaches the bottom with ...
- physics - A 21.0-kg child descends a slide 2.20m high and reaches the bottom ...
- physics - A 22.1 kg child descends a slide 3.4 m high and reaches the bottom ...
- college physics - A 22.1 kg child descends a slide 3.4 m high and reaches the ...
- physics - A 17 kg child descends a slide 3.5 m high and reaches the bottom with...
- physics - A 17 kg child descends a slide 3.5 m high and reaches the bottom with...
- physics - A 17 kg child descends a slide 3.5 m high and reaches the bottom with...
- physics - A 17 kg child descends a slide 3.5 m high and reaches the bottom with ...
- Physics - A 17 kg child descends a slide 3.5 m high and reaches the bottom with ...