A 10kg mass initially at rest explodes into three pieces. A 4.5kg piece goes north at...

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A 10kg mass initially at rest explodes into three pieces. A 4.5kg piece goes north at...

A 10kg mass initially at rest explodes into three pieces. A 4.5kg piece goes north at 20 m/s and a 2.0kg piece moves eastward at 60 m.s. what is the speed of the third piece?

a. 80.0 m/s

b. 25.7 m/s

c. 42.9 m/s

d. 60.0 m/s

e. 34.3 m/s

science physics

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