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
oee [108]
4 years ago
9

Bold completed over 100m in 9.58 seconds what is his average speed​

Physics
1 answer:
Lelu [443]4 years ago
3 0

Answer:

At the Berlin 2009 World Championships, Bolt set a world record time of 9.58 seconds for the 100m race, notching a top speed of 27.8 miles per hour (44.72 kilometers per hour) between meters 60 and 80, with an average speed of 23.5 mph.

Explanation:

You might be interested in
A car passes point “A” and then 120 meters later. It’s velocity was measured 21 m/s. If it’s acceleration was constant at 0.853
Norma-Jean [14]

Recall that

{v_f}^2-{v_i}^2=2a\Delta x

where v_i and v_f are the initial and final velocities, respecitvely; a is the acceleration; and \Delta x is the change in position.

So we have

\left(21\dfrac{\rm m}{\rm s}\right)^2-{v_i}^2=2\left(0.853\dfrac{\rm m}{\mathrm s^2}\right)(120\,\mathrm m)

\implies v_i\approx\boxed{15.4\dfrac{\rm m}{\rm s}}

(Normally, this equation has two solutions, but we omit the negative one because the car is moving in one direction.)

7 0
3 years ago
Nuclear power has come under higher scrutiny in recent years. Which statement would make the strongest argument for the use of n
yan [13]

Nuclear power generates large amounts of power with limited production of greenhouse gases.

is the answer

4 0
4 years ago
Read 2 more answers
*PLEASE HELP WILL GIVE BRAINLIEST*
levacccp [35]

Answer: The order is 2,1,5,4,3

Explanation: Hope This helps.

3 0
3 years ago
What does the "coefficient of friction" tell you?
Arte-miy333 [17]
  • a coefficient of fraction is a value that shows the relationship between two objects and the normal reaction between the objects that are involved.
8 0
4 years ago
Wagon wheel. While working on your latest novel about settlers crossing the Great Plains in a wagon train, you get into an argum
OverLord2011 [107]

Answer:

I = 16.7kgm²

Explanation:

Since, Torque is given by,

\tau = F*r = I*\alpha

here, I = Moment of inertia = ??

\alpha = angular acceleration of wheel = a/r

F = tangential tension acting on the wheel = T

a = acceleration of bag of sand = 2.95 m/s^2

r = radius of wheel = d/2 = 120/2 = 60 cm = 0.60 m

from force balance on sand bag,

mg - T = m*a

T = m*(g-a)

m = mass of sand bag = 20 kg

So, I = T*r/\alpha = m*(g-a)*r/(a/r)

Using known values:

I = 20*(9.81 - 2.95)*0.60/(2.95/0.60) = 16.74

I = 16.7 kgm² = Moment of inertia of wheel experimentally

also, Moment of inertia of wheel theoretically(I') = M*r²

given, M = mass of wheel = 70 kg

I' = 70*0.60²= 25.2 kgm² = Moment of inertia of wheel theoretically

7 0
3 years ago
Other questions:
  • A 1000-kg sports car accelerates from rest to 95 km/h in 6.4 s . What is the average power delivered by the engine
    14·1 answer
  • Suppose the tourist in question #1 instead threw the rock with an initial velocity of 8.0
    14·1 answer
  • What is another name for the dependent variable in an experiment? A. A manipulated variable B. A responding variable C. A contro
    13·2 answers
  • The two days of the year on which neither hemisphere is tilted toward or away from the sun are called
    13·2 answers
  • ) In physics, an object that is in motion is said to have kinetic energy. The following formula can be used to determine a movin
    5·1 answer
  • The cars salemens tells you that the car can go from a stopped position to 60 miles per hour in 6 seconds he is giving you the c
    14·1 answer
  • The strong nuclear force holds together which two particles in an atom?
    13·1 answer
  • A roller coaster cart of mass m = 223 kg starts stationary at point A, where h1 = 26.8 m and a while later is at B, were h2 = 14
    8·1 answer
  • How long will it take for a rock to fall 12 meters?
    14·1 answer
  • Evaporation only occurs at the surface of a liquid. true or false.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!