Sunday

March 1, 2015

March 1, 2015

Posted by **Joe** on Tuesday, January 12, 2010 at 8:41pm.

for this I keep on getting 432.5 J but the back of the book tells me that the answer is 352 J and I do not see how to get this answer

I did the PE at the the top of the slide minus the KE at the bottom and got 432.5 J apparently I'm doing soemthing wrong thanks

- Physics -
**bobpursley**, Tuesday, January 12, 2010 at 8:47pmfriction=mgh-1/2 m v^2

= m(gh-.5 v^2)=16(9.8*2.5-.5*2.25^2)

=352 Joules

**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 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 - 21.7 kg child descends a slide 3.5 m high and reaches the bottom with ...

physics - 1. How far (in meters) must a 600 kg pile driver fall, if it is to do ...

physics - 1. How far (in meters) must a 600 kg pile driver fall, if it is to do ...

physics - A 17.0 kg child travels down a playground slide 3.50 m high and ...

physics.... - A 32.0 kg child descends a slide 4.00 m high. She reaches the ...

physics - A 17 kg child descends a slide 3.5 m high and reaches the bottom with...