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3 years ago

While ice skating, Tabitha pushes against the wall to stretch her leg. What is the reaction force?

Physics

2 answers:

Vikki [24]3 years ago

5 0

the wall pushes on the girl

(THIS is the correct answer) :)

german3 years ago

4 0

The force exterted and / or experienced by Tabitha's leg is an opposite reaction force equal to the amount of force she exerts when she pushes against the wall. This is explained further on Newton's third law of motion. Otherwise should the force she exerts on the wall overcomes the force of strength of the wall's resistance, the wall will break to the direction of tabitha's push.

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3 years ago

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4 years ago

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Fynjy0 [20]

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3 years ago

A bungee jumper of mass 80kg jumps from a platform.

klio [65]

The speed he was moving at when he finished falling is 30 m/s.

The given parameters;

mass of the bungee, m = 80 kg

impulse provided by the rope, J = 3200 Ns

initial upward velocity of the jumper, u = 10 m/s

Let the final velocity after falling = v

Let the upwards motion = negative

Let the downwards motion when falling = positive

Apply the principle of conservation of linear momentum;

J = ΔP = Δmv = m(v - u)

3200 = 80(v - (-10))

3200 = 80(v + 10)

$v+ 10 = \frac{3200}{80} \\\\v+ 10 = 40\\\\v = 40-10\\\\v = 30 \ m/s$

Thus, the speed he was moving at when he finished falling is 30 m/s.

Learn more here:brainly.com/question/19027317

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2 years ago