A 0.24 kg puck is initially stationary on an ice surface with negligible friction. At time t = 0, a horizontal force begins to move the puck. The force is given by F→=(16.0-3.43t2)î, with F→ in newtons and t in seconds, and it acts until its magnitude is zero. (a) What is the magnitude of the impulse on the puck from the force between t = 0.502 s and t = 1.98 s? (b) What is the change in momentum of the puck between t = 0 and the instant at which F = 0?

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