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
Natali5045456 [20]
3 years ago
7

What two forces act on falling bodies?

Physics
1 answer:
Alex Ar [27]3 years ago
7 0

The two forces are: Air resistance and gravity.

You might be interested in
Differentiate the following functions with respect to x <br>xsin x​
gtnhenbr [62]

Answer:

Here is your answer

Hope it helps

6 0
3 years ago
Read 2 more answers
A block, M1=10kg, slides down a smooth, curved incline of height 5m. It collides elastically with another block, M2=5kg, which i
erma4kov [3.2K]

Answer:

2.86 m

Explanation:

Given:

M₁ = 10 kg

M₂ = 5 kg

\mu_k = 0.5

height, h = 5 m

distance traveled, s = 2 m

spring constant, k = 250 N/m

now,

the initial velocity of the first block as it approaches the second block

u₁ = √(2 × g × h)

or

u₁ = √(2 × 9.8 × 5)

or

u₁ = 9.89 m/s

let the velocity of second ball be v₂

now from the conservation of momentum, we have

M₁ × u₁ = M₂ × v₂

on substituting the values, we get

10 × 9.89 = 5 × v₂

or

v₂ = 19.79 m/s

now,

let the velocity of mass 2 when it reaches the spring be v₃

from the work energy theorem,  we have

Work done by the friction force = change in kinetic energy of the mass 2

or

0.5\times5\times9.8\times2 = \frac{1}{2}\times5\times( v_3^2-19.79^2)

or

v₃ = 20.27 m/s

now, let the spring is compressed by the distance 'x'

therefore, from the conservation of energy

we have

Energy of the spring =  Kinetic energy of the mass 2

or

\frac{1}{2}kx^2=\frac{1}{2}mv_3^2

on substituting the values, we get

\frac{1}{2}\times250\times x^2=\frac{1}{2}\times5\times20.27^2

or

x = 2.86 m

8 0
3 years ago
Baseball player A bunts the ball by hitting it in such a way that it acquires an initial velocity of 1.3 m/s parallel to the gro
pashok25 [27]

Answer:

Explanation:

cSep 20, 2010

well, since player b is obviously inadequate at athletics, it shows that player b is a woman, and because of this, she would not be able to hit the ball. The magnitude of the initial velocity would therefore be zero.

Anonymous

Sep 20, 2010

First you need to solve for time by using

d=(1/2)(a)(t^2)+(vi)t

1m=(1/2)(9.8)t^2 vertical initial velocity is 0m/s

t=.45 sec

Then you find the horizontal distance traveled by using

v=d/t

1.3m/s=d/.54sec

d=.585m

Then you need to find the time of player B by using

d=(1/2)(a)(t^2)+(vi)t

1.8m=(1/2)(9.8)(t^2) vertical initial velocity is 0

t=.61 sec

Finally to find player Bs initial horizontal velocity you use the horizontal equation

v=d/t

v=.585m/.61 sec

so v=.959m/s

5 0
3 years ago
Read 2 more answers
A 720 kg roller-coaster starts off from Location A. Assuming friction does not impede the car's motion, what will be the change
vaieri [72.5K]
We know, Potential Energy = m * g * h
Here, mass & gravity would be same, but their height will change so it will be:

ΔU = U₂ - U₁
ΔU = mgh₂ - mgh₁
ΔU = mg (h₂ - h₁)

Hope this helps!
7 0
3 years ago
Read 2 more answers
Of the three sciences, physics, chemistry, and biology, the most complex is
Agata [3.3K]

Answer:

I would probably say C to be completely honest

Explanation:

If you agree make sure to give me a like

6 0
2 years ago
Other questions:
  • If the volume of a hot air balloon remains constant, what happens as the temperature of the air inside the balloon increases?
    9·1 answer
  • Sam is walking through the park. He hears a police car coming down the street toward him. What happens to the sound of the siren
    13·2 answers
  • The mass of a body on the surface of the earth is 12kg. If acceleration due to gravity on
    10·1 answer
  • A 20 N unbalanced force causes an object to accelerate at 1.5 m/s2. What is the mass of the object?
    15·1 answer
  • Explain the law of conservation of energy. Discuss at least one example that illustrates this law.
    14·2 answers
  • A 5 kilogram block is dropped from a height of 3 meters and falls straight to the ground. What is the work done by the force of
    5·1 answer
  • Plz answer these two questions. I am so sick.if u ddo it would mean a lot.
    14·1 answer
  • Which pair shows the law of reflection?<br> O A and B<br> O A and C<br> O A and D<br> O A and E
    11·1 answer
  • I NEED HELP ASAP IM ON TIMER !!!!
    6·1 answer
  • A shot is projected at an angle of 55 to the horizontal with a velocity of of 10m/s. Calculate 1. the highest point reached 2. T
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!