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
fredd [130]
3 years ago
9

. A 1.00 kg rock is thrown up into the air from ground level at a speed of 8.00 m/s. The ball travels up

Physics
1 answer:
Liula [17]3 years ago
5 0

Answer:

p = -8 kg-m/s

Explanation:

Given that,

Initial speed of the rock, u = 8 m/s

Mass of the rock, m = 1 kg

The ball travels up  to a maximum height, then returns to the ground.

We need to find the rock's momentum as it strikes the  ground. Let v be the final speed of the rock. Its final speed is as same as initial speed i.e. 8 m/s but in negative direction. So

p = mv

p = 1 kg × (-8 m/s)

= -8 kg-m/s

So, the rock's momentum as it strikes the  ground is (-8 kg-m/s).

You might be interested in
One method used to determine the volume of solids and liquids is displacement.
andreyandreev [35.5K]
A. True. You can use displacement to determine the volume of solids and liquids.
4 0
3 years ago
Read 2 more answers
A star that is several thousand dimmer than the sun with a temperature than 10000 k would be classified as
True [87]
Either cyan bacteria or Precambrian time<span />
4 0
3 years ago
What best describes gravity?
Flura [38]
A fundamental force , is your answer .
4 0
3 years ago
Read 2 more answers
The tub of a washer goes into its spin-dry cycle, starting from rest and reaching an angular speed of 6.0 rev/s in 11.0 s. At th
sleet_krkn [62]

Answer

given,

ω₁ = 0 rev/s

ω₂ = 6 rev/s

t = 11 s

Using equation of rotational motion

The angular acceleration is

  ωf - ωi = α t

  11 α = 6 - 0

      = 0.545 rev/s²

The angular displacement

  θ₁= ωi t + (1/2) α t²

  θ₁= 0 + (1/2) (0.545)(11)^2

  θ₁= 33 rev

case 2

ω₁ = 6 rev/s

ω₂ = 0 rev/s

t = 14 s

Using equation of rotational motion

The angular acceleration is

  ωf - ωi = α t

  14 α = 0 - 6

        = - 0.428 rev/s²

The angular displacement

  θ₂= ωi t + (1/2) α t²

  θ₂= 6 x 14 + (1/2) (-0.428)(14)^2

  θ₂= 42 rev

total revolution in 25 s is equal to

θ =  θ₁ +  θ₂

θ =  33 + 42

θ = 75 rev

3 0
3 years ago
PLEASE HELP !!
kumpel [21]

Answer:

Movement Time

explanation:

5 0
2 years ago
Other questions:
  • What information did mendeleev have about the elements he organized into a periodic table
    8·1 answer
  • A speed boat increases its speed uniformly from vi = 20.0 m/s to vf = 30.0 m/s in a distance of 2.00 x 10^2m. (a) Draw a coordin
    8·1 answer
  • 600-nm light is incident on a diffraction grating with a ruling separation of 1.7 × 10-6 m. The second order line occurs at a di
    10·1 answer
  • Atomic number equals the number of _______ or the number of ______. * giving brainly*
    9·2 answers
  • Please need help on this thank you
    11·1 answer
  • If there are 50 people per square kilometer in a city, and the area of the city is 1.5 × 10 square kilometers. What is the total
    8·1 answer
  • Georgia drops a brick from the top of an 80.0 m building. What is the velocity of the brick when it hits the ground?
    11·1 answer
  • What is the centripetal force necessary to keep a 0.4 kg object rotating in a circular path
    7·1 answer
  • What force must be applied to the end of a rod along the x-axis of length 2.25 m in order to produce a torque on the rod about t
    8·1 answer
  • A 56-N net force acting on a cart accelerates it at a rate of 0.5 m/s/s. What is the mass of the cart
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!