Question

A 2.1 kg firecracker is initially flying upwards in a vacuum space with no gravity with a speed 2 of 5.0 m/s. The firecracker is then exploded into 3 fragments, which all have one-third of the original unexploded mass. As shown in the figure, the 1st fragment is flying with a speed of 7.0 m/s and a 35° angle below a horizon, and the 2nd piece is flying upwards with 12 m/s. [4 pts] Find the final speed v3 and the flying angle for the 3rd fragment. 35° NOTES: sin(θ)--sin(8 + 180°) ; cos(8)--cos(θ + 180°); tan(θ)-tan(θ + 180°)

Answer 1

3 n and y a

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