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
stellarik [79]
2 years ago
15

3. A woman drove her car from home to her daughter's school. The odometre on her dashboard says she travelled 4.5 km to do this.

She then immediately drove back home, using a different route, which was 5.5 km long. The whole journey took 30 minutes.
a. What distance did she travel?

b. What was her displacement?

C. What was her average speed during the journey?
Physics
1 answer:
11111nata11111 [884]2 years ago
5 0

Answer:

Look Below -->

Explanation:

a. She traveled 10 km, add 4.5 km + 5.5 km = 10 km (Distance is the total units travelled, so just add them all up :) )

b. Her displacement is  0 km because she went back home. (Displacement is the difference between the end and starting points)

c. 3 km/hr (30 minutes / 10 km)

You might be interested in
What is the resulting direction of a surface wave?​
german

surface wave is a wave that travels along the surface of a medium. The medium is the matter through which the wave travels. Ocean waves are the best-known examples of surface waves. They travel on the surface of the water between the ocean and the air.

HOPE IT HELPS

7 0
3 years ago
Read 2 more answers
Work done in taking charge from one point of a conductor to is another point is called ​
Yuliya22 [10]

Answer:

⁸

Explanation:

electric potential

I think so

6 0
3 years ago
Suppose that two objects attract each other with a gravitational force of 16 units. If the mass of both objects was doubled, and
Lady_Fox [76]

Answer:

  • Distance, such that displacement over time is taken into account doesn't change regardless of the length in x meters or mass in kg
  • So the force will remain constant given 16 units
6 0
3 years ago
Which spacecraft did john glenn pilot when he became the first man to orbit the earth in 1962?
Makovka662 [10]
Spacecraft used is "Friendship 7". Hope it helps.
7 0
3 years ago
A railroad freight car, mass 15,000 kg, is allowed to coast along a level track at a speed of 2.0 m/s. It collides and couples w
gayaneshka [121]

Answer:

The speed of the two cars after coupling is 0.46 m/s.

Explanation:

It is given that,

Mass of car 1, m₁ = 15,000 kg

Mass of car 2, m₂ = 50,000 kg

Speed of car 1, u₁ = 2 m/s

Initial speed of car 2, u₂ = 0

Let V is the speed of the two cars after coupling. It is the case of inelastic collision. Applying the conservation of momentum as :

m_1u_1+m_2u_2=(m_1+m_2)V

V=\dfrac{m_1u_1+m_2u_2}{(m_1+m_2)}

V=\dfrac{15000\ kg\times 2\ m/s+0}{(15000\ kg+50000\ kg)}  

V = 0.46 m/s

So, the speed of the two cars after coupling is 0.46 m/s. Hence, this is the required solution.          

3 0
3 years ago
Other questions:
  • At distances greater than 2 femtometers, the nuclear strong force is stronger than (select all that apply):
    13·2 answers
  • Three people pull simultaneously on a stubborn donkey. Jack pulls directly ahead of the donkey with a force of 61.3 N, Jill pull
    15·1 answer
  • Why did the chicken cross the road
    5·2 answers
  • To navigate, a porpoise emits a sound wave that has a wavelength of 4.9 cm. The speed at which the wave travels in seawater is 1
    6·1 answer
  • A particle falling at its terminal speed vterm is in dynamic equilibrium with no net force. Use Newton's second law for this par
    6·1 answer
  • This questic concerns a tablet that
    6·1 answer
  • Assuming the same current is running through two separate coils, why is it easier to thrust a magnet into a wire coil with one l
    6·2 answers
  • a box is pushed 40 m by a mover. the amount of work done was 2,240j. how much force was exerted on the box a box is pushed 40 m
    11·2 answers
  • What is the only part in our body we do not stretch?
    11·2 answers
  • Share your thoughts about this statement by John Wesley<br> "Electricty is the soul of universe"
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!