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
Alik [6]
3 years ago
15

A soccer player carries the ball for a distance of 40.0 m in the direction 42.0° west of south. find the westward component of t

he ball's displacement.

Physics
1 answer:
Maksim231197 [3]3 years ago
3 0

Actually what the problem meant about the westward component of the ball’s displacement is the horizontal component of the displacement. To help us better understand the problem, I attached a figure of the situation.

We can see from the figure that to solve for the value of the horizontal component, we have to make use of the sin function. That is:

sin θ = side opposite to the angle / hypotenuse of the triangle

sin 42 = x / 40 m

x = (40 m) sin 42

x = 26.77 m

 

Therefore the ball has a westward displacement of about 26.77 m

You might be interested in
A 450g mass on a spring is oscillating at 1.2Hz. The totalenergy of the oscillation is 0.51J. What is the amplitude.
Volgvan

Answer:

A=0.199

Explanation:

We are given that  

Mass of spring=m=450 g==\frac{450}{1000}=0.45 kg

Where 1 kg=1000 g

Frequency of oscillation=\nu=1.2Hz

Total energy of the oscillation=0.51 J

We have to find the amplitude of oscillations.

Energy of oscillator=E=\frac{1}{2}m\omega^2A^2

Where \omega=2\pi\nu=Angular frequency

A=Amplitude

\pi=\frac{22}{7}

Using the formula

0.51=\frac{1}{2}\times 0.45(2\times \frac{22}{7}\times 1.2)^2A^2

A^2=\frac{2\times 0.51}{0.45\times (2\times \frac{22}{7}\times 1.2)^2}=0.0398

A=\sqrt{0.0398}=0.199

Hence, the amplitude of oscillation=A=0.199

4 0
3 years ago
A constant friction force of 25 N acts on a 65-kg skier for 15 s on level snow. What is the skier’s change in velocity
nikdorinn [45]

Answer:

\Delta v=5.77m/s

Explanation:

Newton's 2nd Law relates the net force <em>F</em> on an object of mass <em>m </em>with the acceleration <em>a</em> it experiments by <em>F=ma.</em> In our case the net force is the friction force, since it's the only one the skier is experimenting horizontally and the vertical ones cancel out since he's not moving in that direction. Our acceleration then will be:

a=\frac{F}{m}

Also, acceleration is defined by the change of velocity \Delta v in a given time t, so we have:

a=\frac{\Delta v}{t}

Since we want the change in velocity, <em>mixing both equations</em> we conclude that:

\Delta v=at=\frac{Ft}{m}

Which for our values means:

\Delta v=\frac{Ft}{m}=\frac{(25N)(15s)}{(65Kg)}=5.77m/s

4 0
3 years ago
In space, there is no friction. Without the force of friction, satellites and other moving objects will continue moving at the s
Yakvenalex [24]

Answer:

Newton's first law

Explanation:

it says that an object will continue to be at rest or keep moving till any external for is applied to it to make it move or stop respectively.

6 0
3 years ago
which of the following is not a projectile? a.a satellite b.a throw ball c.a ball on the ground d.a soaring arrow
Delvig [45]
C a ball on the ground
7 0
3 years ago
Read 2 more answers
PLS AWSNER FAST AND CORRECT I WILL GIVE BRAINLEST
lesya [120]

Answer:

When a car stops suddenly, the inertia the keeps you moving forward will finally stop and give you whiplash, which could seriously injure or even kill a baby. With the seat turned back, the force will be decreased dramatically, and prevent any fatal harm.

6 0
2 years ago
Other questions:
  • To practice Problem-Solving Strategy 30.1: Inductors in Circuits. A circuit has a 1 V battery connected in series with a switch.
    6·1 answer
  • Technician A says if a fuse burns out when a switch is turned on, a short circuit is present before the switch. Technician B say
    8·1 answer
  • Which particle of the atom has a positive charge? A. proton B. electron C. nucleus D. neutron
    12·1 answer
  • What sort of process converts the mechanized energy in the ocean into electricity?
    6·1 answer
  • A camcorder has a power rating of 13 watts. If the output voltage from its battery is 6 volts, what current does it use?
    9·1 answer
  • What are two things that determine our traits? If someone could answer asap, that would be awesome!
    10·2 answers
  • A 48.0-kg astronaut is in space, far from any objects that would exert a significant gravitational force on him. He would like t
    9·1 answer
  • Enter an expression in the box to Write the equation of the line perpendicular to y=-3x-1 that passes through the point (3,4).
    12·1 answer
  • Usa test prep- Look at the picture below to answer. If u answer correctly i will mark you as brainliest!
    8·2 answers
  • The image below The image below The image below The image below The image below The image below The image below The image below
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!