Posted by **tj** on Wednesday, May 18, 2011 at 10:44pm.

A 2.00 kg blob of Gak, moving at 4.0 m/s, strikes a motionless figure skater in the back and sticks. The skater, with the Gak on her back, glides off at 0.160 m/s. Calculate the skater’s mass.

- physics -
**drwls**, Wednesday, May 18, 2011 at 11:40pm
Neglect friction (because of the ice skates)and assume conservation of momentum. That results in the equation

2.00*4.0 = (M + 2.00)*0.160

Solve for M, which will be in units of kg

- Physics -
**Total baller**, Thursday, May 30, 2013 at 7:10pm
mvi + mvi(2) = mvf + mvf(2) all energy is conserved

2(4) = (m + 2).16 (the masses are now combined)

8 = .32m

m = 25 kg

your welcome

- physics -
**Bill Smith**, Thursday, May 30, 2013 at 10:35pm
Ok you guys are retarded and definitely do not know your PEMDAS. The correct answer is 48 kg...

## Answer This Question

## Related Questions

- physics - Two fi gure skaters are moving east together during a performance. ...
- Science - A skater pushes off with one foot and then glides in a circle. Is a ...
- physics - A 63-kg ice-skater glides with a speed of 10 m/s toward a 14-kg sled ...
- Physics - an ice skater with a mass of 80kg pushes off against a second skater ...
- physics - An ice skater glides around a rink at a constant speed of 2 m/s. Is ...
- Physics - An ice skater of mass 55.3 kg stops to tie his shoe and is at rest. A ...
- Science- Physics - an 80 kg skater and a 60 kg skater stand in the middle of an...
- Laws of Motion - Two skaters are in the exact center of a circular frozen pond. ...
- physics - Skater 1 has a mass of 45 kg and is at rest. Skater 2 has a mass of 50...
- Physics - An 91.0 kg in-line skater does 3620 J of nonconservative work by ...

More Related Questions