Wednesday

September 17, 2014

September 17, 2014

Posted by **Jamie** on Thursday, January 4, 2007 at 6:57pm.

a) how much work is done on the snowball by the gravitaitonal force during its flight to the flat ground below the cliff?

b) what is the change in the gracitational potential energy of the snowball-Earth system during the flight?

c) If that gravitational potential energy is taken to be zero at the height of the cliff, what is its value when the snowball reaches teh ground?

a) Is this the equation I would use: mgh= 1/2mv^2?

For b) and c) can you please explain to me how I would solve these problems?

Yes for a.

There is no change in total gpe. What work is done on the snowball by gravity to change its KE is equal.

c: if the top is zero, then the bottom is -h, and gpe is -mgh

- fack -
**me**, Monday, January 28, 2013 at 12:47amin the ass

**Answer this Question**

**Related Questions**

Physics - A 1.50 kg snowball is fired from a cliff 13.0 m high with an initial ...

physics - A 0.720 kg snowball is fired from a cliff 8.10 m high. The snowball's ...

Physics/Math - A 1.50 kg snowball is fired from a cliff 12.5 m high with an ...

Physics/Math - A 1.50 kg snowball is fired from a cliff 13.5 m high with an ...

Physics 124 - A projectile is fired from the top of a cliff at 14.2 m/s at an ...

physics - A cannon on a level plain is aimed 50 degrees above th e horizontal ...

College Algebra - Show all work. A projectile is fired from a cliff 100 ft above...

physics - A boy sitting on the edge of a vertical cliff fires a rock with a ...

physics - A boy sitting on the edge of a vertical cliff fires a rock with a ...

physics - a cannon ball is shot from a 100 m high cliff with an inital velocity ...