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2 years ago

What are some common forces that make it difficult for humans to

Physics

1 answer:

Papessa [141]2 years ago

3 0

Answer:

Explanation:

Applying Forces, doing Work and developing Power. Applying Forces: Force is a push or a pull and many forces are acting on you all of the time. ... possible to stretch the rubber band with one hand using your thumb and finger at two different places but ... If you are smart, however, just exerting forces, shouldn't get you tired

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⦁ A car going 50 m/s is brought to rest in a distance of 20.0 m as it strikes a pile of dirt. How large an average force is exer

gtnhenbr [62]

Answer:

the average force exerted by seatbelts on the passenger is 5625 N.

Explanation:

Given;

initial velocity of the car, u = 50 m/s

distance traveled by the car, s = 20 m

final velocity of the after coming to rest, v = 0

mass of the passenger, m = 90 kg

Determine the acceleration of the car as it hit the pile of dirt;

v² = u² + 2as

0 = 50² + (2 x 20)a

0 = 2500 + 40a

40a = -2500

a = -2500/40

a = -62.5 m/s²

The deceleration of the car is 62.5 m/s²

The force exerted on the passenger by the backward action of the car is calculated as follows;

F = ma

F = 90 x 62.5

F = 5625 N

Therefore, the average force exerted by seatbelts on the passenger is 5625 N.

8 0

2 years ago

Which two elements define a story's setting?

Archy [21]

Answer:

the plot structure defines a story's setting

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2 years ago

Why do heavier objects fall at the same speed as lighter ones?

GaryK [48]

Speed of any freely falling object is always same. Provided, both are left to fall from the same height. If you perform this experiment in a perfect vacuum or near vacuum laboratory, both of them will reach ground with same velocity this is because there is no resistance to their motion. This is always true no matter where you go and perform this experiment.
It can be easily proved from conservation of mechanical energy. Why conserving energy? because there are no forces acting on the freely falling objects other than conservative force(mg).

5 0

3 years ago

A circular loop of radius r is rotated through a magnetic field B, which of the following would increase the magnetic flux throu

s344n2d4d5 [400]

Answer: B

Explanation: I think

3 0

2 years ago

1. In a<br> wave, the particles of the<br> medium move in the same direction as the<br> wave motion.

iragen [17]

In sound waves, the particles move in the same direction as the wave is moving, so you wouldn't be able to see them like ripples in the air, instead they make areas in the air where the particles are more squished together, and areas where the particles are further apart.

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2 years ago

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