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
Lilit [14]
3 years ago
15

What is the magnitude of your displacement when you follow directions that tell you to walk 225 m in one direction, make a 90° t

urn to the left and walk 350 m, then make a 30° turn to the right and walk 125 m?​
Physics
1 answer:
Gekata [30.6K]3 years ago
7 0

Start by facing East. Your first displacement is the vector

<em>d</em>₁ = (225 m) <em>i</em>

Turning 90º to the left makes you face North, and walking 350 m in this direction gives the second displacement,

<em>d</em>₂ = (350 m) <em>j</em>

Turning 30º to the right would have you making an angle of 60º North of East, so that walking 125 m gives the third displacement,

<em>d</em>₃ = (125 m) (cos(60º) <em>i</em> + sin(60º) <em>j</em> )

<em>d</em>₃ ≈ (62.5 m) <em>i</em> + (108.25 m) <em>j</em>

The net displacement is

<em>d</em> = <em>d</em>₁ + <em>d</em>₂ + <em>d</em>₃

<em>d</em> ≈ (287.5 m) <em>i</em> + (458.25 m) <em>j</em>

and its magnitude is

|| <em>d</em> || = √[ (287.5 m)² + (458.25 m)² ] ≈ 540.973 m ≈ 541 m

You might be interested in
The function x = (3.0 m) cos[(4π rad/s)t + π/5 rad] gives the simple harmonic motion of a body. Find the following values at t =
just olya [345]

Answer:

Explanation:

x  = 3 Cos (4πt + π/5)

(a) Substitute t = 3 s

x = 3 Cos (12π + π/5)

x = 3 (0.82) = 2.46 m

(b) Velocity, v = dx/dt

v = 3 (-1)(4π) Sin(4πt + π/5)

Substitute t = 3 s

v = - 37.68 Sin(12π + π/5)

v = - 37.68 (0.572)

v = - 21.55 m/s

(c) Acceleration, a = dv/dt

a = 3 (-1)(4π)(4π) Cos(4πt + π/5)

Substitute t = 3 s

a = - 473.26 (0.82)

a = - 388.21 m/s²

(d) Phase = 4πt + π/5

Substitute t = 3 s

Phase = 12 π + π/5 = 38.308 rad

(e) ω = 4π

so, 2πf = 4π

f = 2 Hz

(f) T = 1 / f = 1 / 2 = 0.5 second  

5 0
3 years ago
Van finds a metamorphic rock as he is exploring a small ravine near his house. Metamorphic rock is a type of rock that has gone
Klio2033 [76]

heat and pressure would be your answer hope it helps


4 0
3 years ago
Read 2 more answers
Which two factors does the power of a machine depend on? А. work and distance B.. force and distance C. work and time D. time an
Ivahew [28]

Hello There!

AnimeVines is here!

The answer is...

C. Work and time.

HopeThisHelps!!

AnimeVines

6 0
3 years ago
Which lists types of materials from most conductive to least conductive?
Lilit [14]
Superconductor, conductor, semiconductor, insulator
7 0
3 years ago
Read 2 more answers
Is 250 g higher than 100 g in science
polet [3.4K]
Its the same thing. Is 250 grams more then 100 grams
5 0
3 years ago
Read 2 more answers
Other questions:
  • a. Convert 21.0 cm to inches. Show your dimensional analysis setup. b. Convert 29.7 cm to inches. Show your dimensional analysis
    11·1 answer
  • What has more thermal energy a small balloon or a large balloon
    10·2 answers
  • Three examples of each of Newton's Law 1st 2nd and 3rd
    5·1 answer
  • An object rolls east at a steady speed of 12m/s for 3.0 seconds. what distance did it travel
    9·1 answer
  • Find the magnitude of the force needed to accelerate a 300 g mass with a⃗ = -0.205 m/s2 i^+0.700 m/s2 j
    6·1 answer
  • The diagram shows a person using a piece of gym equipment to lift weights.
    6·2 answers
  • Need help with is if u can asap
    14·1 answer
  • Your car is initially at rest when your hit that gas and the car begins to accelerate at a rate of 1.464 m/s/s. The acceleration
    6·1 answer
  • Horizontal angulation is: Select one: a. the side-to-side angulation. b. different when using the paralleling and bisecting tech
    10·1 answer
  • A 2.00MeV neutron is emitted in a fission reactor. If it loses half its kinetic energy in each collision with a moderatoratom, h
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!