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## Homework Statement

A car (of constant mass) doubles its kinetic energy while driving down a hill sloped at 45º. The factor by which its momentum changes is answer is 1.4?

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A car (of constant mass) doubles its kinetic energy while driving down a hill sloped at 45º. The factor by which its momentum changes is answer is 1.4?

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Doc Al

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Yes. The factor is √2 ≈ 1.41The factor by which its momentum changes is answer is 1.4?

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Doc Al

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[tex]{KE}_1 = 1/2 m v^2_1[/tex]

[tex]{KE}_2 = 2 {KE}_1[/tex]

Find v_{2} in terms of v_{1}.

[tex]{KE}_2 = 2 {KE}_1[/tex]

Find v

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