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
Blizzard [7]
3 years ago
15

A father (75 kg) was standing watching TV, minding his own business when one of his kids (20 kg) approached him at 2m/s heading

at 0 degrees and jumped onto his back. Another kid (15 kg) approached him at 3m/s heading at 45 degrees to the first kid and also jumped on him at exactly the same time. Immediately after impact, in what direction did the group go (measured in degrees with respect to the first kid)
Physics
1 answer:
Nastasia [14]3 years ago
7 0

Answer:

Explanation:

Conservation of momentum

Let's say the first child was headed north

North momentum

75(0) + 20(2) + 15(3sin45) = (75 + 20 + 15)vn

vn = 0.6529 m/s

East momentum

75(0) + 20(0) + 15(3cos45) = (75 + 20 + 15)ve

ve = 0.28927 m/s

θ = arctan(0.28927/0.6529)

θ = 23.896...

θ = 24° east of north

You might be interested in
You need eye drops for your dry eyes. You brought only a few dollars with you to the store. Which is the best method of choosing
Mnenie [13.5K]

Answer:

Compare brands first, but purchase the one that has lots of commercial advertisements, Compare ingredients and purchase the brand that is safe to use with soft contact lenses, Compare prices and purchase the most inexpensive brand.

Explanation:

4 0
3 years ago
7. Navy use SONAR method to locate the position of submarine under water. The waves used in SONAR are A transverse waves. B elec
pshichka [43]

Answer:

A. transverse waves

vote me brainliest?? 5/5

thanks:)

8 0
3 years ago
Read 2 more answers
What is the speed of a wave on a string with a wavelength of 1.75 m and a frequency of 2.0 Hz
deff fn [24]

Answer:

V=3.5 m/s

Explanation:

V=(F)(W)

V=(2)(1.75)

V= 3.5 m/s

7 0
3 years ago
billy bob joe's truck has a mass of 3,800 g and an acceleration of 4.5 m/s^2. what is the force of the truck? (you will have to
maria [59]

Answer:

<h2>17.1 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question

3800 g = 3.8 kg

We have

force = 3.8 × 4.5

We have the final answer as

<h3>17.1 N</h3>

Hope this helps you

4 0
3 years ago
The electrons involved in the formation of a chemical bond are called
tatiyna

Answer: Valence electrons

Valence electrons are those that are in the outermost or superficial layer of the atom, which means they have the highest energy compared to those of the inner layers.

Because of their position, it is easier for these electrons to interact with other atoms of their own element as well as different elements. This is done through the process of forming bonds when being attracted by other atoms.

7 0
3 years ago
Other questions:
  • The student toses a ball into the air and then watches the ball fall back down to earth. When does the ball have the most potent
    14·1 answer
  • 61 pts!!!!!!!!!!!!!!!!!!!
    10·2 answers
  • a model rocket flies horizontally off the edge of a cliff at a velocity of 40.0m/s. if the canyon below is 110.0m deep, how far
    14·1 answer
  • A sample of the inert gas krypton has its pressure tripled. if the original volume is 12 l, what is the final volume in l
    10·1 answer
  • A closed container is filled with oxygen. the pressure in the container is 405 kpa . what is the pressure in millimeters of merc
    11·1 answer
  • Which conditions are usually the effect of a low air pressure system? clear, dry weather cloudy, wet weather cold, dry weather h
    10·1 answer
  • ¿Qué diferencia una magnitud fundamental de una derivada?
    5·2 answers
  • What would be the relative difference between the currents required by a 60W lightbulb and a
    15·1 answer
  • In the following free body diagram, what is the net force on the object?
    10·1 answer
  • A typical current in a lightning bolt is 103 a. estimate the magnetic field 9 m from the bolt (in t). (enter the magnitude.)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!