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
Rashid [163]
3 years ago
10

Calculate the velocity of a 80kg man that has a momentum of 720 kg m/s

Physics
1 answer:
kotykmax [81]3 years ago
8 0
V = 720 / 80 = 9 m/s
You might be interested in
A centrifuge rotor rotating at 10,000 rpm is shut off and is eventually brought to rest by a frictional force of 1.20m n. if the
Pani-rosa [81]
<span>Answer: The moments of inertia are listed on p. 223, and a uniform cylinder through its center is: I = 1/2mr2 so I = 1/2(4.80 kg)(.0710 m)2 = 0.0120984 kgm2 Since there is a frictional torque of 1.20 Nm, we can use the angular equivalent of F = ma to find the angular deceleration: t = Ia -1.20 Nm = (0.0120984 kgm2)a a = -99.19 rad/s/s Now we have a kinematics question to solve: wo = (10,000 Revolutions/Minute)(2p radians/revolution)(1 minute/60 sec) = 1047.2 rad/s w = 0 a = -99.19 rad/s/s Let's find the time first: w = wo + at : wo = 1047.2 rad/s; w = 0 rad/s; a = -99.19 rad/s/s t = 10.558 s = 10.6 s And the displacement (Angular) Now the formula I want to use is only in the formula packet in its linear form, but it works just as well in angular form s = (u+v)t/2 Which is q = (wo+w)t/2 : wo = 1047.2 rad/s; w = 0 rad/s; t = 10.558 s q = (125.7 rad/s+418.9 rad/s)(3.5 s)/2 = 952.9 radians But the problem wanted revolutions, so let's change the units: q = (5528.075087 radians)(revolution/2p radians) = 880. revolutions</span>
6 0
3 years ago
I need help with #4 and #5?
algol [13]

A

Explanation:

just  pick a

3 0
2 years ago
You can comfortably hold your fingers close beside a candle flame, but not very close above the flame. why? challenge (optional)
Inessa05 [86]
The candle flame releases hot gases, which directly go in upwards directions. Due to which the air near the flame of the candle is very hot and dense. The particles along with vapour move up. And since the sideways, the air is not very dense and hot, we are able to hold the candle. In anti-gravity region, there will be no density differences and also, the convection process wont occur. So, the candle quickly snuffs off.
6 0
3 years ago
Read 2 more answers
if a man hits a golf ball (0.2 kg) which accelerates at a rate of 20 m/s squared. what amount of force acted on the ball?
kkurt [141]

F = ma

We have mass = 0.2kg

and acceleration = 20 m/s^2

So..

F = (0.2)(20)

F = 4 N

6 0
3 years ago
A sample of nitrogen gas is inside a sealed container. The volume of the container decreases while the temperature is kept const
frez [133]
I guess it’s d) isobaric mate correct me if I am wrong :D
7 0
2 years ago
Other questions:
  • What are the magnitude and direction of the force the pitcher exerts on the ball? (enter your magnitude to at least one decimal
    15·2 answers
  • The mass density of an object is 16.3 g/cc, and its volume is determined to be 16.7 cc. what is the mass of the object?
    14·1 answer
  • A sample of tendon 3.00 cm long and 4.00 mm in diameter is found to break under a minimum force of 128 N. If instead the sample
    10·1 answer
  • Which apple has the greatest potential energy?
    5·2 answers
  • Which speed is at the sound barrier?
    5·2 answers
  • Which action best demonstrates the transformation of mechanical energy to heat energy? Select one: a. Digesting a meal b. Burnin
    6·1 answer
  • A student throws a baseball at a large gong 52 m away and hears the sound of the gong 1.73333 s later. The speed of sound in air
    10·1 answer
  • After a parallel-plate capacitor has been fully charged by a battery, the battery is disconnected and the plate separation is in
    9·2 answers
  • True or false describing a metal as malleable means that it can be pounded into a new shape
    12·1 answer
  • An object is projected horizontally at 14.1 m/s from the top of a 195.0 meter cliff.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!