dentical twins, each with mass 62.0 kg, are on ice skates and at rest on a frozen lake, which may be taken as frictionless. Twin A is carrying a backpack of mass 12.0 kg. She throws it horizontally at 2.80 m/s to Twin B. Neglecting any gravity effects, what are
Identical twins, each with mass 62.0 kg, are on ice skates and at rest on a frozen lake, which may be taken as frictionless. Twin A is carrying a backpack of mass 12.0 kg. She throws it horizontally at 2.80 m/s to Twin B. Neglecting any gravity effects, what are the subsequent speeds of Twin A and Twin B?
| Twin A | m/s |
| Twin B | m/s |
Given:
Here we are given two identical twin skaters A and B of mass 62.0 kg each, they both are on ice skates at rest on a frozen lake.
Twin A is Carrying a Backpack of mass 12 kg. She threw it upwards a Horizontal distance at 2.80 m/s at twin B.
Since we can say that Momentum of Twin A and Backpack is conserved so, By law conservation of momentum
MAVA+MpackVpack=0
MA .VA +2.80.MPack =0
where MA is mass of twin and Mpack is mass of backpack.
VPack=2.80
62.0(VA)+2.80(12)=0
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