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Concept explainers
(a)
The final velocity when a person jumps from 2.8 m high roof.
(b)
To find: Final velocity as person lands on the ground,
Formula:
Third equation of motion:
Where,
Calculation:
Substitute the vales and solve for final velocity.
c)
The average force exerted on person’s torso by his legs during deceleration.
(d)
To find: (I)Deceleration of person’s legs,
(II)Force on torso during deceleration,
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Physics
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