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
evablogger [386]
3 years ago
12

Plz help!!!!!!!!

Physics
1 answer:
kvv77 [185]3 years ago
4 0

Answer:-61.67m/s^2

Explanation:

initial velocity(u)=250m/s

final velocity(v)=14.5m/s

Distance covered(d)=505m

v^2=u^2+2xaxd

(14.5)^2=250^2+2xax505

210.25=62500+1010a

Collect like terms

210.25-62500=1010a

-62289.75=1010a

a=-62289.75/1010

a=-61.67m/s^2

You might be interested in
How does speed affect momentum
Arada [10]
Momentum = mass • velocity
M = m • v

Speed is a scalar quantity
Velocity is a vector quantity

That is truly the only difference
8 0
3 years ago
Read 2 more answers
A thermometer is placed into a flask of water with pieces of ice and reads 273.15. Which temperature scale is being used? A. Kel
zzz [600]

A. Kelvin. It is 32 degrees fahrenheit

6 0
3 years ago
Read 2 more answers
A ball rolls from point A to point B. The total energy of the ball at point A isn’t the same as the sum of its potential energy
rusak2 [61]

Answer:

option b

Explanation:

because the law of conservation

it means that energy can never created nor be destroyed

even it will change into another form if energy

7 0
3 years ago
What's the purpose of your nails
frez [133]
To protect the delicate flesh and skin. God has a reason for everything.
3 0
3 years ago
A student decides to give his bicycle a tune up. He flips it upside down (so there's no friction with the ground) and applies a
aleksklad [387]

Answer:

V=9.2565m/s

Explanation:

From the question we are told that:

Force F = 34 N  

Time t = 0.6 s

Length of pedal l_p=16.5cm \approx0.165m

Radius of wheel r = 33 cm = 0.33 m

Moment of inertia, I = 1200 kgcm2 = 0.12 kg.m2

Generally the equation for Torque on pedal \mu is mathematically given by

\mu=F*L\\\mu=34*0.165

\mu=5.61N.m

Generally the equation for  angular acceleration \alpha is mathematically given by

 \alpha=\frac{\mu}{l}

 \alpha=\frac{5.61}{0.12}

 \alpha=46.75

Therefore Angular speed is \omega

\omega=\alpha*t

\omega=(46.75)*(0.6)

\omega=28.05rad/s

Generally the equation for  Tangential velocity V is mathematically given by

V=r\omega

V=(0.33)(28.05)

V=9.2565m/s

 

5 0
3 years ago
Other questions:
  • What is the primary cause for the change in seasons?
    6·2 answers
  • PLEASE HELP!!!
    5·1 answer
  • . Consider a fully extended arm that is rotating about the shoulder such that with a shoulder-to-hand length of 30 cm. If the ar
    12·1 answer
  • A fish (8 kg) is being yanked vertically upward out of the water and the fishing line breaks. If the line is rated to a maximum
    5·2 answers
  • The length of a displaced pendulum body which passes its lowest point twice every second
    9·1 answer
  • A 1234 kg freight car moving at 6 m/s runs into a 2468 kg freight car at rest. They stick together upon collision. What was the
    9·1 answer
  • How does the force of the car change as the mass of the car is increased?
    11·1 answer
  • Define the refraction index of a
    13·1 answer
  • A toy car travels at 9.2 m/s. The car travels a distance of 27.9 m. How long did it take to travel that distance?
    12·1 answer
  • A grinding wheel 0.35 m in diameter rotates at 2600 rpm .
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!