Question
A boy on a 2.2kg skateboard initially at rest tosses a 7.9kg jug of water in the forward direction.
If the jug has a speed of 3.2m/s relative to the ground and the boy and skateboard move in the opposite direction at .56m/s, find the boy's mass.
Answer in units of kg.
If the jug has a speed of 3.2m/s relative to the ground and the boy and skateboard move in the opposite direction at .56m/s, find the boy's mass.
Answer in units of kg.
Answers
bobpursley
initial momentum= final momentum
0=(M+2.2).56+7.9(-3.2)
solve for M
0=(M+2.2).56+7.9(-3.2)
solve for M
Anonymous
24.048 kg
Joseph
You’re wrong
Isaac Reicher
42.942
(If you have 2.3 kg skate 8.4kg jug.... = 42.5)
(If you have 2.3 kg skate 8.4kg jug.... = 42.5)