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Chapter 7: Q1P (page 170)

(I) What is the magnitude of the momentum of a 28-g sparrow flying with a speed of 8.4 m/s?

Short Answer

Expert verified

The magnitude of the momentum of the sparrow is \(0.24\;{\rm{kg}} \cdot {\rm{m/s}}\;\).

Step by step solution

01

Momentum

The magnitude of the momentum of any object is equal to the product of the mass and the speed of the object.

02

Given data

The mass of the sparrow is \(m = 28\;{\rm{g}} = 0.028\;{\rm{kg}}\).

The speed of the sparrow is \(v = 8.4\;{\rm{m/s}}\).

03

Calculation of the magnitude of the momentum

The magnitude of the momentum of the sparrow is calculated below.

\(\begin{array}{c}P = mv\\ = \left( {0.028\;{\rm{kg}}} \right) \times \left( {8.4\;{\rm{m/s}}} \right)\\ = 0.24\;{\rm{kg}} \cdot {\rm{m/s}}\;\end{array}\)

Hence, the magnitude of the momentum of the sparrow is \(0.24\;{\rm{kg}} \cdot {\rm{m/s}}\;\).

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Most popular questions from this chapter

The masses of the Earth and Moon are \({\bf{5}}{\bf{.98 \times 1}}{{\bf{0}}^{{\bf{24}}}}\;{\bf{kg}}\) and \({\bf{7}}{\bf{.35 \times 1}}{{\bf{0}}^{{\bf{22}}}}\;{\bf{kg}}\), respectively, and their centers are separated by \({\bf{3}}{\bf{.84 \times 1}}{{\bf{0}}^{\bf{8}}}\;{\bf{m}}\).

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