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
Tems11 [23]
3 years ago
11

A car is driven 110 km west and then 40 km southwest, how far is the car from the point of origin?

Physics
1 answer:
Margaret [11]3 years ago
8 0

Answer:

141.147 km

Explanation:

sin45=\frac{BD}{BC}\\\Rightarrow BD=BCsin45\\\Rightarrow BD=40\times sin45\\\Rightarrow BD=28.28\ km

Now, AE=BD also CD=BD as the angle B and C are equal

So, from Pythagoras theorem

AC² = AE²+(CD+DE)²

AC=\sqrt{AE^2+(CD+DE)^2}\\\Rightarrow AC=\sqrt{(40\times sin45)^2+(110+40\times sin45)^2}\\\Rightarrow AC=141.147\ km

Displacement of the car is 141.147 km

You might be interested in
Supposed an object is weighted with a spring balance, first in air then while totally immersed in water.The readings on the bala
Sedbober [7]
Is An object completely submerged in a fluid displaces its own volume of fluid ". This is: D
8 0
2 years ago
Two points are located on a rigid wheel that is rotating with decreasing angular velocity about a fixed axis. Point A is located
Nata [24]

Answer:

4. Both points have the same instantaneous angular velocity

Explanation:

Angular velocity is a measure of the the number of rotations per unit time. This does not depend on the radius of the wheel. Hence, all points on the wheel have the same angular velocity. This invalidates option 1.

The centripetal acceleration is given by the product to the square of the angular velocity and the radius or distance from the centre. A and B are located at different distances from the centre. Hence, they have different centripetal acceleration. This invalidates option 2.

The tangential acceleration depends on the linear velocity which itself is a product of the angular velocity and the distance from the centre. Hence, it is different for both points because they are at different distances from the centre.

Since both A and B are fixed points on the wheel, they move through equal angles in the same time. In fact, for any other fixed point, they all move through the same angle in the same time. This invalidates option 5.

4 0
3 years ago
A car traveling at 38 m/s starts to decelerate steadily. It comes to a complete stop in 7 seconds. What is its acceleration?
Katena32 [7]

a  = 38 m/s /  7s

a  =  5.43 ms⁻²

8 0
3 years ago
According to Ohm's law, a circuit with a high resistance _____. will have a low electric current will have a high electric curre
kakasveta [241]

Answer:

current

Explanation:

5 0
3 years ago
Read 2 more answers
By what percent must one increase the tension in a guitar string to change the speed of waves on the string from 301 m/s to 343
garri49 [273]

Answer:

29.8 %

Explanation:

7 0
3 years ago
Other questions:
  • Floating piece of wood - buoyancy question.?
    15·1 answer
  • How do i round decimals in physics.
    6·1 answer
  • What are real images? Are the upright or inverted?
    11·1 answer
  • What is the full definition of specific heat?
    15·2 answers
  • Recently, the media, always trying to make things sound sensational, have started to call totally eclipsed moon "the blood moon.
    7·1 answer
  • How do chemical formulas represent compounds? <br> Help PLEASE
    8·2 answers
  • Calculate the work done when a 10 N force pushes against a cart 4.0 m
    15·2 answers
  • Animals, including humans, need shelter, food, water, air, and space in order to survive. How do animals satisfy their basic nee
    10·2 answers
  • Two colours of light which mix to make white light are called
    11·2 answers
  • ) Determining the order of events and the relative age of rocks by examining the position of
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!