# yo yo physics

• Jun 19th 2010, 10:33 PM
LaylaSam
yo yo physics
ahh what is this question soo arrggghhhh(Angry)

a body of mass 400g is moving along a smooth surface at a velocity of 10m s-1 east. it strikes a body mass 650g, initially at rest, and then the 400g body moves at a velocity of 8m s-1 in a direction E35 degree N. What is the velocity of the 650g object?

i assume it has something to do with vectors but please help me out here thanks you (Happy)
• Jun 20th 2010, 02:57 AM
mr fantastic
Quote:

Originally Posted by LaylaSam
ahh what is this question soo arrggghhhh(Angry)

a body of mass 400g is moving along a smooth surface at a velocity of 10m s-1 east. it strikes a body mass 650g, initially at rest, and then the 400g body moves at a velocity of 8m s-1 in a direction E35 degree N. What is the velocity of the 650g object?

i assume it has something to do with vectors but please help me out here thanks you (Happy)

Use conservation of momentum. (Note that momentum is a vector).