A kitten of mass 0.60kg leaps 30° to the horizontal out of a toy truck of mass 1.2kg causing it to move over horizontal ground at 4.0m/s. At what spee

A kitten of mass 0.60kg leaps 30° to the horizontal out of a toy truck of mass 1.2kg causing it to move over horizontal ground at 4.0m/s. At what speed did the kitten leap?

 

[anisingh259]

(Mass of truck) (velocity of truck) = (mass of kitten) (horizontal component of kitten's momentum)
(Mass of kitten) (horizontal component of kitten's momentum) = (mass of truck) (velocity of truck)
(0.6 kg) (horizontal component of kitten's momentum) = (1.2 kg) (4 m/s)
horizontal component of kitten's momentum = (1.2 kg) (4 m/s) / 0.6 kg
horizontal component of kitten's momentum = 8 m/s

If V is the total speed of the kitten then, Vcos30'=8m/s
So, V = 16/sqrt(3) m/s.