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fredd [130]
2 years ago
8

Why would you have trouble breathing at high altitudes?

Physics
1 answer:
monitta2 years ago
4 0

Answer:

A. It is colder at the top of a mountain

Explanation:

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A locomotive has a mass of 200,000kg. It is moving at 4.5m/s. Find its momentum .
anastassius [24]
Momentum (p) = mass × velocity

P= 200,000×4.5

P= 900,000 .... answer !!
4 0
3 years ago
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What would happen if your stomach wasint working properly
adelina 88 [10]
Your stomach, as in JUST your stomach?
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7 0
3 years ago
A small piece of Styrofoam packing material is dropped from a height of 2.60 m above the ground. Until it reaches terminal speed
Vadim26 [7]

Answer:

Explanation:

a ) After the attainment of terminal speed , object takes 4.5 s to cover a distance of 2 m

So terminal speed V = 2 / 4.5

= .444 m /s

When it attains terminal speed , acceleration becomes zero

0 = g - B x .444

B = 22.25 s⁻¹

b ) At t = 0 , v = 0

a = g - B v

a = g at t = 0

c ) When v = .15

a = g - 22.25 x .15

= 9.8 - 3.31

= 6.5  m /s²

7 0
3 years ago
6. One minute after takeoff, a rocket carrying the space shuttle into outer space reaches a speed of 447 m/s.
Sidana [21]

Answer:

acceleration of the rocket is given as

a = 7.45 m/s^2

Explanation:

As we know that rocket starts from rest and then reach to final speed of 447 m/s after t = 1 min

so we have

v_i = 0

v_f = 447 m/s

t = 1 min = 60 s

so we have

a = \frac{v_f - v_i}{t}

a = \frac{447 - 0}{60}

a = 7.45 m/s^2

7 0
2 years ago
A wheelbarrow is a complex machine that combines which simply marchines?
koban [17]
It's most likely the combination of a bucket and the wheel. 
4 0
3 years ago
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