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3 years ago

What momentum of a 50kilogram ice skater gliding across the ice at a speed of 5m/s?

Physics

2 answers:

kirill [66]3 years ago

7 0

Answer:

Momentum (P) = Mass (kg) * Velocity (m/s)

P = M * V

P = 50 * 5

P = 250

So momentum is 250 kgm/s

Explanation:

Ivenika [448]3 years ago

5 0

Momentum (P) = Mass (kg) * Velocity (m/s)

P = M * V
P = 50 * 5
P = 250

So momentum is 250 kgm/s

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Ivanshal [37]

Answer:

27.82 m/s

Explanation:

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3 years ago

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3 years ago

A roller coaster starts from rest at its highest point and then descends on its (frictionless) track. Its speed is 26 m/s when i

sasho [114]

Answer:

The velocity is $v_h = 19.2 \ m/s$

Explanation:

From the question we are told that

The speed of the roller coaster at ground level is $v = 26 \ m/s$

Generally we can define the roller coaster speed at ground level using the an equation of motion as

$v^2 = u^2 + 2 g s$

u is zero given that the roller coaster started from rest

$26^2 = 0 + 2 * g * s$

$s = \frac{26^2}{ 2 * g }$

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$s_{h} = \frac{37.6}{2}$

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Where $v_h$ is the velocity at the half way point

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3 years ago