- #1
cooney88
- 12
- 0
Q. Two objects A and B are moving on a frictionless horizontal surface. A has a mass of 6kg and speed of 3m/s , B has a *** of 8kg and a speed of 5m/s. if they collide and stick together the speed in m/s of the composite object after the collision is:
diagram:
A----------------------> X
angle = 30->
B is traveling at an angle towards the x markso what i have been doing is i have been finding the before and after collision as x and y components. then putting the final xcomponent momentum and y component momentums into this formula :total momentum after = (x^2 + y^2)^.5
i would then have my total momentum before and then the total momentum after with v unknown. i got 4.02 for it. the question is multiple choice and these are the choices 3.23 16.2 2.71 4.02 or 3.76
diagram:
A----------------------> X
angle = 30->
B is traveling at an angle towards the x markso what i have been doing is i have been finding the before and after collision as x and y components. then putting the final xcomponent momentum and y component momentums into this formula :total momentum after = (x^2 + y^2)^.5
i would then have my total momentum before and then the total momentum after with v unknown. i got 4.02 for it. the question is multiple choice and these are the choices 3.23 16.2 2.71 4.02 or 3.76