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
Oksanka [162]
3 years ago
9

À A car moves with an initial velocity of 18 m/s due north. Find the velocity of the car after 7 Os if

Physics
1 answer:
Nonamiya [84]3 years ago
3 0

Answer:

(a) v_f=28.5m/s

(b) v_f=7.5m/s

Explanation:

Hello.

(a) In this case since the car is moving at an initial velocity of 18 m/s due north, the final velocity is computed considering the acceleration as positive since it is due north as well:

v_f=v_0+at=18m/s+1.5m/s^2*7s\\\\v_f=28.5m/s

(b) In this case, since the car is moving due north by the acceleration is due south it is undergoing a slowing down process, thereby the acceleration is negative therefore the final velocity turns out:

v_f=v_0+at=18m/s-1.5m/s^2*7s\\\\v_f=7.5m/s

Best regards.

You might be interested in
When you're driving uphill,___________________.
Sedaia [141]
C. you need to double your speed.

since there is gravity and the more mass the more gravity pulls it to the core of the earth; cars are heavy. 
5 0
4 years ago
Read 2 more answers
Why is Venus sometimes called Earth’s twin?
monitta

Answer:

B.

Venus is the same size and density.

Explanation:

It is becuase venus has the same size and density as earth

8 0
3 years ago
Read 2 more answers
According to Galileo, this quantity is not needed to keep a body in motion under ideal conditions.
Sergio [31]
This condition is called Galileo's Law of Inertia which states that all bodies accelerate at the smart rate , no matter what are their masses or size. Inertia is that tendency of matter to resist changes in its velocity.  <span>Isaac Newton's first law of motion captures the concept of inertia. </span>
8 0
3 years ago
Read 2 more answers
How can water boil without heat?​
kaheart [24]

Answer:

Put water at room temperature into a vacuum chamber and begin removing the air. Eventually, the boiling temperature will fall below the water temperature and boiling will begin without heating. Or if you want to be easy but messy, add dry ice to a bowl of water and watch how the water starts to boil.

3 0
3 years ago
Newton's third law says that for every force there is an equal reaction force in the opposite direction. what does this imply ab
stealth61 [152]

This imply that the force applied by the gravity of the earth on the person, is equal to the force applied by the person on the earth.

According to the Newton's third law, for every force there is an equal reaction force, in the case of person standing on the earth, the gravity of the earth pulls the person by the same magnitude as the force applied by the person on the earth (which is equal to the weight of the person)..

7 0
3 years ago
Other questions:
  • What is the current when a typical static charge of 0.234~\mu\text{c}0.234 μc moves from your finger to a metal doorknob in 0.59
    13·1 answer
  • What do we have seasons on earth
    8·1 answer
  • 3. This diagram shows that Al can see the reflections of Ed and Fred in the
    14·1 answer
  • Sociologist use tools such as investigation and data collection to make their study more
    11·1 answer
  • Chemical weathering may occur because the mineral or rock is exposed to the air. this reaction occurs naturally with some chemic
    14·1 answer
  • Identify the charge(s) with increasing electric potential
    11·1 answer
  • The force exerted by the wind on the sails of a sailboat is Fsail = 330 N north. The water exerts a force of Fkeel = 210 N east.
    5·1 answer
  • calculate the acceleration of Airplane that starts at rest and reaches the speed of 45M/S in nine seconds
    13·1 answer
  • What type of nuclear decay is occurring between
    9·1 answer
  • If an airplane has a rest mass of 20,000 kg , what is its relativistic mass in the alternate universe when it is moving at 180 m
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!