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kompoz [17]
3 years ago
6

When landing after a spectacular somersault, a 45.0 kg gymnast decelerates by pushing straight down on the mat. Calculate the fo

rce she must exert if her deceleration is 8.00 times the acceleration of gravity.?
Physics
1 answer:
STALIN [3.7K]3 years ago
6 0
So the force that the gymnast with a mass m=45 kg, has to exert against the ground to stop if her acceleration is a=8*g, where g=9.81 m/s², can be obtained from the Newtons second law: F=m*a, where F is the force, m is the mass and a is acceleration. 

F=m*a=m*8*g=45*8*9.81=3531.6 N. 

So the force that a gymnast has to exert on the mat in order to stop is F=3531.6 N.  
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slega [8]
We divide the thin rectangular sheet in small parts of height b and length dr. All these sheets are parallel to b. The infinitesimal moment of inertia of one of these small parts is
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3 years ago
An isotope is a version of the same element that differs in the composition of the A) atom. B) nucleus. C) particle. Eliminate D
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The correct answer is B because isotopes have different numbers of neutrons, and neutrons are located in the nucleus

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Answer:1.04 N

Explanation:

Given

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3 years ago
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Answer:

The energy stored is 1.4 x 10^-9 J.

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