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
Ilia_Sergeevich [38]
3 years ago
13

Sally is on a canoe that comes to a stop a small distance from the dock. Since it is such a small distance, Sally decides to jum

p to the dock. She makes the jump, but the canoe moves away from her as she jumps. Since Sally is interested to see what happens on other boats, she makes the same jump from a fishing boat that is much larger than the canoe. Which boat will move away from Sally more quickly?
a. The canoe will move away from Sally more quickly because the fishing boat is larger in mass.
b. The fishing boat will move away from Sally more quickly because it is larger in mass.
c. Both boats will move away at the same speed because Sally has not changed mass and momentum must be conserved.
d. It is impossible to predict which boat moves away from Sally more quickly.
Physics
1 answer:
natita [175]3 years ago
8 0

Answer:

 v₂> v₃  velocity canoe is more than velocity fishing boat

Explanation:

For this exercise we must define a system consisting of the girl, Sally and the boat, in one case the canoe and in the other the fishing boat; for this system we can use moment conservation

Initial moment. Before the jump

           p₀ = (M + m₂) v

Final moment. After the jump

          p_{f} = M v₁ - m₂ v₂

Where m and v are the masses and speed of the canoe

          p₀ = p_{f}

          (M + m₂) v = M v₁ - m₂ v₂

In the case of changing the canoe for the heaviest fishing boat, the final moment is

          p_{f} = M v₁ - m₃ v₃

          p₀ = p_{f}

           (M + m₃) v = M v₁ - m₃ v₃

Since the canoe is stopped the speed v = 0, we write the speed of each boat

Canoe

          0 = M v₁ - m₂ v₂

          v₂ = M / m₂ v₁

Fishing boat

        0 = M v₁ - m₃ v₃

        v₃ = M / m₃ v₁

Since the masses of the fishing boat (m₃) is greater than the mass of the canoe (m₂) the speed of the fishing boat is less than the speed of the canoe, we can find the relationship between the two speeds

        v₂ / v₃ = m₃ / m₂

Here you can see what  v₂> v₃  velocity canoe is more than velocity fishing boat

You might be interested in
A piece of wood has a mass of 25g and a volume of <br> 10cm3 What is its density?
Tasya [4]

Answer:

<h3>The answer is 2.5 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

From the question we have

density =  \frac{25}{10}  =  \frac{5}{2}  \\

We have the final answer as

<h3>2.5 g/cm³</h3>

Hope this helps you

3 0
3 years ago
What is addictive about vaping?
AnnZ [28]
Answer:
The last one, nicotine from tobacco
4 0
3 years ago
What is the mass of a man who accelerates 4 m/s2 under the action of a 200 N net force?
Over [174]

Answer:

\huge  \boxed{ \boxed{50 \:   kg }}

Explanation:

The mass of the man can be found by using the formula

m =  \frac{f}{a}  \\

f is the force

a is the acceleration

From the question we have

m =  \frac{200}{4}  \\

We have the final answer as

<h3>50 kg</h3>

Hope this helps you

7 0
2 years ago
A ball is dropped off the balcony of a hotel room and it takes 2.8s to fall to the ground . how high above the ground is the bal
RideAnS [48]

The height of the ball above the ground is 38.45 m

First we will calculate the velocity of the ball when it touch the ground by using first equation of motion

v=u+gt

v=0+9.81×2.8

v=27.468 m/s

now the height of the ground can be calculated by the formula

v=√2gh

27.468=√2×9.81×h

h=38.45 m

5 0
3 years ago
What is the wavelength of an earthquake wave if it has a speed of 13 km/s and a frequency of 14 Hz?
Galina-37 [17]
Wavelength = velocity/frequency

wavelength = v/f
v= 13km/s = change this to m/s = 13000m/s
f= 14Hz

wavelength = 13000m/s÷14Hz =928.7 m
8 0
3 years ago
Read 2 more answers
Other questions:
  • An object is moving at a constant speed along a straight line. Which of the following statements is not true? A. There must be a
    13·1 answer
  • (Will give brainliest answer)
    7·2 answers
  • A 20 N force is applied to a .170kg hockey puck. What is the acceleration of the puck?
    13·1 answer
  • Newly discovered planet has twice the mass and three times the radius of the earth. What is the free-fall acceleration at its su
    14·2 answers
  • _______ occurs when a body’s molecular wavelength sends vibrations to another body, resulting in the production of another sound
    6·2 answers
  • An object has rotational inertia I. The object, initially at rest, begins to rotate with a constant angular acceleration of magn
    8·1 answer
  • If a person traveled from Sacramento to Los Angeles by car, their distance would be 384.9 miles. What would their displacement b
    12·1 answer
  • if C is The vector sum of A and B C = A + B What must be true about The directions and magnitudes of A and B if C=A+B? What must
    8·2 answers
  • A car starts from rest and accelerates uniformly over a time of 7 seconds for a distance of 190m. Find the the acceleration of t
    7·1 answer
  • 3. How is using a model to study cells helpful?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!