1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Liula [17]
4 years ago
11

A man is using a parachute to come down from an aircraft. Name the force which is

Physics
1 answer:
Katena32 [7]4 years ago
4 0

Answer:

gravity is the force pulling him down.   without the parachute as a force acting against gravity... he would fall much much faster  :/  

Explanation:

You might be interested in
A bullet of mass 20g is a fired with a velocity of 50mls from a gun of mass 2.5kg. Calculate the recoil velocity of the gun.​
jok3333 [9.3K]

Answer:

v = - 0.4 m/s

Explanation:

Initial momentum is zero as neither gun nor bullet have velocity

Conservation of momentum

0 = 0.020(50) + 2.5v

v = - 0.4 m/s

3 0
3 years ago
Which of the following would be a good question that could be scientifically investigated? What is the best advice a parent can
Nesterboy [21]
<span>"Does lack of sunlight affect plant growth?"

This question can be investigated with procedures according to
the Scientific Method, because "lack of sunlight" can be arranged
unambiguously, and "affected plant growth" can be identified
unambiguously.

The other questions involve words or phrases with ambiguous definitions,
that can mean different things to different people, and would be hard to
agree on, like  "</span><span>best advice",  "sound quality",  and  "happiness in life".</span>
4 0
3 years ago
Read 2 more answers
A 1000 kg train car traveling at 12 m/s on a level track has 400 kg of sand dumped, vertically, into it. What is the final speed
crimeas [40]

Answer:

The final speed of the train car is 8.57 m/s.

Explanation:

Given that,

Mass of train car = 1000 kg

Mass of sand = 400 kg

Speed of train car = 12 m/s

We need to calculate the final speed of the train car after the sand is dumped

Using conservation of momentum

m_{1}u_{1}=(m_{1}+m_{2})v...(I)

Put the value in the equation (I)

1000\times12=(1000+400)v

v=\dfrac{1000\times12}{1400}

v=8.57\ m/s

Hence, The final speed of the train car is 8.57 m/s.

5 0
3 years ago
The AB rope is fixed to the ground at its A end, and forms 30º with the vertical. Its other end is connected to two ropes by mea
lana66690 [7]

Answer:

T = 80√3 N ≈ 139 N

W = 160 N

Explanation:

Sum of forces on B in the x direction:

∑F = ma

80 N sin 60° − T sin 30° = 0

T = 80 N sin 60° / sin 30°

T = 80√3 N

T ≈ 139 N

Sum of forces on B in the y direction:

∑F = ma

80 N cos 60° + T cos 30° − W = 0

W = 80 N cos 60° + T cos 30°

W = 40 N + 120 N

W = 160 N

6 0
3 years ago
an elastic material of length 3m is to be stretched to produce an extension three times it's original length. Calculate the forc
Anastaziya [24]

Answer:

F = 8840.7 N

Explanation:

The parameters given are:

Length L = 3 metres

Extension e = 3 × 3 = 9m

Force constant K = 982.3 Newton per metre​

From Hook's law,

Provided the elastic limit is not extended, the extension is directly proportional to the force applied.

That is,

F = Ke

Substitute all the parameters into the formula

F = 982.3 × 9

F = 8840.7 N

7 0
3 years ago
Other questions:
  • 2. El sonido de una ballena es en especial de frecuencia baja, pero existe una especie de ballena la Whalien cuya frecuencia es
    9·1 answer
  • an axe used to split wood is driven into a piece of wood a distance of 3.0 cm. If mechanical advantage of the axe is 0.85. how f
    5·1 answer
  • A capacitor has plates of area 8.25 * 10 ^ - 5 m ^ 2 . To create a capacitance of 3.35*10^ -10 F , how far apart should the plat
    8·1 answer
  • Suppose you hit a 0.058-kg tennis ball so that the ball then moves with an acceleration of 10 m/s2. if you were to hit a basketb
    13·1 answer
  • Levi and Clara are trying to move a very heavy box. Levi is pushing the box with a force of 30 N, and Clara is pulling the box w
    9·1 answer
  • Which of the following refers to the increasing size of deserts worldwide? A. disintegration B. desertification C. decomposition
    5·2 answers
  • What are possible units for impulse? Check all that apply.
    13·2 answers
  • A d'Arsonal meter with an internal resistance of 1 kohm requires 10 mA to produce full-scale deflection. Calculate thew value of
    12·1 answer
  • Detergents are used to clean the clothes why​
    6·2 answers
  • What year was the RoboSapien toy robot released?<br> a) 2007<br> b) 2004<br> c) 2020<br> d) dunno
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!