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
2 particles having charges q1=0.500 nC and q2=8.00 nC are separated by a distance of 1.20m. at what point along the line connect
laila [671]
Refer to the figure shown below.

Charge q₁ = 0.5 nC = 0.5x10⁻⁹ C
Charge q₂ = 8 nC = 8x10⁻⁹ C
d = 1.2 m, the distance between the two charges.

x is the distance between the two charges, measured from the charge q₁.

From Coulomb's Law,
The electric field generated along x by q₁ is
E₁ = k(q₁/x²)
The electric field generated along x by q₂ is
E₂ = -k[q₂/(d-x)²]
where
k = 8.988x10⁹ (N-m²)/C² is the Coulomb constant/

When the electric field along x is zero, then
E₁ + E₂ = 0
k[q₁/x² - q₂/(d-x)²] = 0

That is,
0.5/x² = 8/(1.2 - x)²
8x² = 0.5(1.2 - x)²
16x² = 1.44 - 2.4x + x²
15x² + 2.4x - 1.44 = 0

Solve with the quadratic formula.
x = (1/30)*[-2.4 +/- √(5.76 + 86.4)]
   = 0.24 or -0.4 m

Reject the negative answer to obtain
x = 0.24 m
d-x = 0.96 m

Answer
The electric field is zero between the charges so that
(a) It is at 0.24 m from the 0.5 nC charge, and
(b) It is at 0.96 m from the 8 nC charge.

7 0
3 years ago
Read 2 more answers
The density of a substance is defined as its
Fantom [35]
<h2>Answer</h2>

<u>Density is the mass per unit volume</u>

<h2>Explanation</h2>

Density is actually is the ratio of the mass of an object to its volume. It is used to compare the different objects on the basis of their weight. You can say that more the weight of an object more will be its density. For example, the density has the role in floating the ships on the water. When we insert the wooden piece inside water it pops up to the surface. The weight of the wood piece is more than the water and volume is greater which affects its density. When the object gets smaller the size on pressing, the density of the object increase.

7 0
3 years ago
1. Which object has the greatest inertia?
Digiron [165]

Answer:

1.c,2.c,3.a,4.d

Explanation:

the following answer are listed with there number

7 0
3 years ago
IS THERE A PLASTIC THAT YOU CAN SEE AND BREATHE THROUGH??? SOMEONE PLEASE ANSWER THIS!!!
dezoksy [38]

Answer in my own words:

Research reveals that most of the indoor microplastics contained in the air are created by synthetic plastic fibres, as well as by textiles used in furniture

Key words:

1: Research

2: air

3:  Plastic

Please mark brainliest

<em><u>Hope this helps.</u></em>

3 0
3 years ago
Two infinitely long parallel wires carry current in opposite directions. Wire 1 has current 15.0 A and wire 2 has current 19.9 A
natita [175]

Answer:

x= 2*I1*d/(I1+I2) meter

4 0
3 years ago
Other questions:
  • 20 cubic inches of a gas with an absolute pressure of 5 psi is compressed until it’s press reaches 10 psi. What is the new volum
    5·1 answer
  • 2. What kinetic energy has a 1 tonne car travelling at 15 m/s?
    10·1 answer
  • Which of the following is a likely outcome of a failed experiment?
    12·1 answer
  • Where are auroras frequently seen
    5·2 answers
  • If a metal ball suspended by a rod is at rest, which force is responsible for balancing the force due to gravity?
    14·2 answers
  • A pendulum of mass 0.8 kg has 20 joules of potential energy at the top of its path. It’s kinetic energy at the bottom of its swi
    15·2 answers
  • What Science is/is not and How Physics and Chemistry are Connected
    7·1 answer
  • Pls help quick too.................
    15·1 answer
  • According to the law of conservation of energy, which statement must be
    13·1 answer
  • What is the shallowest part of the ocean ecosystem is called
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!