Tuesday

March 31, 2015

March 31, 2015

Posted by **falcon306** on Wednesday, August 10, 2011 at 10:46pm.

What was the mass of the second block?

How do you set this equation up? I tried a couple of different ways and nothing worked, I only have one attempt left before I get the question wrong. Please help

- Physics Help -
**drwls**, Wednesday, August 10, 2011 at 11:09pmUse conservation of linear momentum.

M1*V1 + M2*V2 = (M1+M2)*V3

The only unknown is M2 in this case, so you can solve for it.

1.9*1.8 + M2*4.5 = (1.9 + M2)*3.5

3.42 + M2 = 6.65

M2 = ____ kg

**Answer this Question**

**Related Questions**

Physics - A 2.9 kg block slides along a frictionless surface at 1.3 m/s. A ...

Physics - Please help!! I know how to work the problem to find velocities, but ...

Physics - A 1.1 kg block slides along a friction-less surface at 1.4 m/s. A ...

Physics - a 2.0 kg block moving at 8 m/s on a frictionless surface collides ...

Physics - A block with a mass of 2.5 kg on a frictionless track collides and ...

Physics - A block is placed on a frictionless ramp at a height of 14.5 m above ...

physics - I am having great difficulty with this question. A block is placed on ...

physics - A horizontal spring with a spring constant of 22 N/m has a 600 gram ...

physics - A horizontal spring with a spring constant of 22 N/m has a 600 gram ...

physics - A physics student pulls a block of mass m = 23 kg up an incline at a ...