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
NeX [460]
3 years ago
15

An object is moving north with an initial velocity of 14 m/s accelerates 5m/s for 20 seconds. What is the final velocity of the

object
Physics
1 answer:
olga2289 [7]3 years ago
6 0

Use the kinematic equation: Vf=Vi+at

Then plug;

Vi=14 m/s

a=5 m/s²

t=20 s. Therefore;

Vf=14+(5*20)

Vf=114 m/s.

You might be interested in
The largest salami in the world, made in Norway, was more than 20 m long. If a hungry mouse ran around the salami’s circumferenc
Musya8 [376]

Answer: 0.09 m

Explanation:

Centripetal acceleration in terms of tangential speed is:

a_c=\frac{v^2_t}{r}

where r is the radius.

It is given that,

centripetal acceleration of the mouse, a_c=0.29 m/s^2

tangential speed , v_t=0.17m/s

Radius of salami is:

r =\frac{(0.17m/s)^2}{0.29 m/s^2}=0.09m

Thus, the radius of the salami is 0.09 m.

8 0
3 years ago
A lamp is on a dimmer switch. As you turn the switch from the lowest setting to the highest setting, which statement would best
avanturin [10]

Answer:

D

Explanation:

When something that needs power that you are turning off you will not need power when its off.

8 0
3 years ago
Who was the first scientist to propose that an object could emit only certain amounts of energy?
Rzqust [24]
It was Niels Bohr who proposed it
3 0
3 years ago
How much larger is the diameter of Jupiter compared to the diameter of Saturn?
allsm [11]
Really long we’ll not long but far in distance
5 0
2 years ago
A 20.0-N weight slides down a rough inclined plane which makes an angle of 30 degree with the horizontal. The weight starts from
Ulleksa [173]

Answer:

1270.64\ \text{J}

Explanation:

m = Mass of object = \dfrac{mg}{g}

mg = Weight of object = 20 N

g = Acceleration due to gravity = 9.81\ \text{m/s}^2

v = Final velocity = 15 m/s

u = Initial velocity = 0

d = Distance moved by the object = 150 m

\theta = Angle of slope = 30^{\circ}

f = Force of friction

fd = Work done against friction

The force balance of the system is

\dfrac{1}{2}m(v^2-u^2)=(mg\sin\theta-f)d\\\Rightarrow \dfrac{1}{2}mv^2=mg\sin\theta d-fd\\\Rightarrow fd=mg\sin\theta d-\dfrac{1}{2}mv^2\\\Rightarrow fd=20\times \sin 30^{\circ}\times 150-\dfrac{1}{2}\times \dfrac{20}{9.81}\times 15^2\\\Rightarrow fd=1270.64\ \text{J}

The work done against friction is 1270.64\ \text{J}.

8 0
3 years ago
Other questions:
  • In order to be considered work, the components that must be present are?..
    11·2 answers
  • PLEASE ANSWER!!!!!
    13·1 answer
  • Is it possible for an object moving with a constant speed to accelerate? explain?
    11·1 answer
  • Which of these is most likely a characteristic of a parent isotope before it releases radioactive particles?
    11·1 answer
  • What is the ecliptic, and why is it tilted with respect to the celestial equator?
    15·1 answer
  • HELP PLEASE!!!!
    14·1 answer
  • When doing scientific research ,the sources used should be ?
    7·2 answers
  • Which of the following is rounded to 2 significant figures? (Select all that apply)
    13·1 answer
  • Weight refers to the force of gravity acting on a mass. We often calculate the weight of an object by multiplying its mass by th
    14·1 answer
  • A lot of energy is not stored in biomass, but is used for biological processes instead. Which process
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!