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In this lesson, we will learn how to identify the definition of linear momentum as the product of the mass and the net linear velocity of an object or a system.

Q1:

Two canoers, each of mass 65 kg, paddle in a single canoe of mass 52 kg. The canoe moves at a velocity of 1.5 m/s with respect to the water, in the same direction as the water. The water flows at a velocity of 3.2 m/s with respect to a stretch of land. What is the momentum of the canoe with respect to the stretch of land?

Q2:

An avalanche moves a 40-cm-thick layer of snow over an area of 100 m by 500 m. The layer of snow moves distance of 1 . 0 × 1 0 3 m down a hill in a time of 5.5 s. If the average density of the snow is 350 kg/m^{3}, what is the average momentum of the avalanche?

Q3:

A hockey puck of mass 150 g is sliding due east on a frictionless table with a speed of 10 m/s. Suddenly, a constant force of magnitude 5.0 N and direction due north is applied to the puck for 1.5 s.

Find the northward component of the hockey puck's momentum at the end of the 1.5-s interval.

Find the eastward component of the hockey puck’s momentum at the end of the 1.5-s interval.

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