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
DENIUS [597]
3 years ago
14

IM DESPERATE PLS HELP ME I DONT UNDERSTAND THIS! PLEASE PLEASE PLEASE ANSWER BACK

Physics
1 answer:
OlgaM077 [116]3 years ago
8 0

Answer:

The speed with which the man flies forward is 5.5 m/s

Explanation:

The mass of the man = 100 kg

The mass of the scooter = 10 kg

The speed with which the man was traveling on the scooter = 5 m/s

The speed of the scooter after it hits the rock = 0 m/s

Let v represent the speed with which the man flies forward

The formula for momentum, P, is P = Mass × Velocity

The conservation of linear momentum principle is, the total initial momentum = The total final momentum, therefore, we have;

The total initial momentum = (100 kg + 10 kg) × 5 m/s = 550 kg·m/s

The total final momentum = 100 kg × v + 10 kg × 0 m/s = 100 kg × v

When the momentum is conserved, we have;

550 kg·m/s = 100 kg × v

∴ v = 550 kg·m/s/(100 kg) = 5.5 m/s.

The speed with which the man flies forward = v = 5.5 m/s

You might be interested in
175 in expanded form​
hjlf

Answer:

In expanded notation the answer is 100,70 5

Explanation:

Hope this helps

4 0
3 years ago
Which of these is the best method to estimate the speed at which a star is moving away from Earth?
Allushta [10]
The best and most correct answer among the choices provided by your question is the first choice or letter A.

<span>The best method to estimate the speed at which a star is moving away from Earth is to measure the star's red shift.</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
8 0
3 years ago
Read 2 more answers
Rearrange the formula for V1 get the formula for V1
tatuchka [14]

To isolate v₁ from the given equation, subtract aΔt from both members of the equation and simplify:

\begin{gathered} v_2=v_1+a\cdot\Delta t \\ \Rightarrow v_2-a\cdot\Delta t=v_1+a\cdot\Delta t-a\cdot\Delta t \\ \Rightarrow v_2-a\cdot\Delta t=v_1 \\ \therefore v_1=v_2-a\cdot\Delta t \end{gathered}

Therefore, the formula for v₁ is:

v_1=v_2-a\cdot\Delta t

3 0
1 year ago
The field is 78 meters long. A timer started when the sled started at
Nezavi [6.7K]

Answer: 4

Explanation: when you're solving velocity you should divide the two numbers so 16/4=4

5 0
3 years ago
In order to increase the kinetic energy of a speeding train by 44%, 42MJ of work must be performed (1 MJ = 106 J). If the final
victus00 [196]

Answer:

Explanation:

100 % increase makes an amount 2 times .

44 % increase = 42 MJ

100 % increase = 95.45 MJ

final kinetic energy = 2 x 95.45 MJ

= 190.9 x 10⁶ J

1/2 m v² = 190.9 x 10⁶

.5 x m x 9² = 190.9 x 10⁶

m = 4.71 x 10⁶ kg

= 4710 metric ton .

7 0
3 years ago
Other questions:
  • Becky has a shower and uses 20,000g of water with a specific heat capacity of 4200J/KG. When the water is supplied with 336,000J
    5·1 answer
  • How many neutrons does element X have if its atomic number is 48 and its mass number is 167?
    11·1 answer
  • ____________ showed that matter and energy are two forms of the same thing.
    10·2 answers
  • What is folk remedies
    12·1 answer
  • How does respiration occur in human beings​
    11·1 answer
  • Assertion: When I P+ Q I = I P- QI, then P must be perpendicular to Q. Reason: The relation will hold even when Q is a null vect
    7·1 answer
  • How does the plant lichen quicken the weathering process?
    13·1 answer
  • A behavior that is developed by observing others or being taught is
    9·2 answers
  • A car is moving at 14 m/s. After 30 s, its speed inncreased to 20 m/s. What is the acceleration over time
    9·1 answer
  • Plot the line for the equation on the graph.<br><br><br><br><br><br> y−2=−2(x+4)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!