Asked by samm
A firecracker in a coconut blows the coconut into three pieces. Two pieces of equal mass fly off south and west, perpendicular to each other, at 21m/s . The third piece has twice the mass as the other two.
What is the speed of the third piece?
What is the direction of the third piece?
What is the speed of the third piece?
What is the direction of the third piece?
Answers
Answered by
bobpursley
I would use conservation of momentum in the S and west direction.
S direction
M*21S+2M*v S=0
so v in the South direction is -10.5
so the same in th eEast direction
v in the East Direction
V=-10.5 E
angle= arctan 10.5/10.5 or NE at velocity 10.5*sqrt2
S direction
M*21S+2M*v S=0
so v in the South direction is -10.5
so the same in th eEast direction
v in the East Direction
V=-10.5 E
angle= arctan 10.5/10.5 or NE at velocity 10.5*sqrt2