Question

The u.s army’s parachuting team, the Golden Knights, are on a routine

Answer 1

The average force is -2600 N

Explanation:

First of all, we need to calculate the acceleration of the man during the collision, which is given by the suvat equation:

$v^2-u^2=2as$

where:

v = 0 is his final velocity (he comes to a stop)

u = 4.0 m/s is the initial velocity

a is the acceleration

s = 0.20 m is the distance covered

Solving for a,

$a=\frac{v^2-u^2}{2s}=\frac{0-4.0^2}{2(0.20)}=-40 m/s^2$

The negative sign indicates that it is a deceleration.

Now we can find the average force on the man by using Newton's second law of motion:

$F=ma$

where

m = 65 kg is the mass

$a=-40 m/s^2$

And substituting,

$F=(65)(-40)=-2600 N$

where the negative sign indicates the force is in the direction opposite to the motion.

Learn more about force and Newton's second law:

brainly.com/question/3820012

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