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
Anna35 [415]
3 years ago
14

An Arrow (1 kg) travels with velocity 30 m/s to the right when it pierces an apple (2 kg) which is initially at rest. After the

collision, the arrow and the apple are stuck together. Assume that no external forces are present and therefore the momentum for the system is conserved. What is the final velocity (in m/s) of apple and arrow after the collision?
Physics
1 answer:
Ksenya-84 [330]3 years ago
3 0

Answer:

10 m/s

Explanation:

m_1 = Mass of arrow = 1 kg

m_2 = Mass of apple = 2 kg

u_1 = Initial Velocity of arrow = 30 m/s

u_2 = Initial Velocity of apple = 0 m/s

v = Velocity of combined mass

For elastic collision

m_1u_1 + m_2u_2 =(m_1 + m_2)v\\\Rightarrow v=\frac{m_1u_1 + m_2u_2}{m_1 + m_2}\\\Rightarrow  v=\frac{1\times 30 + 2\times 0}{1 + 2}\\\Rightarrow v=10\ m/s

Final velocity of apple and arrow after collision is 10 m/s

You might be interested in
What is the net force acting on the buggy. ?The net force is pointing to the ?
Papessa [141]

Answer: 390, right

explanation: The net force is just the sum of all of these forces acting on an object. ... This equation is the sum of n forces acting on an object. The magnitude of the net force acting on an object is equal to the mass of the object multiplied by the acceleration of the object, as shown in this formula.

6 0
3 years ago
Where does the kinetic energy come fromwhen you roll down a hill?
Lapatulllka [165]
From the change of GPE into KE. Conservation of energy tells us this.
8 0
3 years ago
Mass and Weight: What is the mass of an object that experiences a gravitational force of 685 N near Earth's surface where g
11Alexandr11 [23.1K]

Answer:

m = 69.9 kg

Explanation:

The mass and the weight of an object are two different quantities. Mass is basically the amount of matter that is present in a body. It remains same everywhere in the universe and measured in kilograms.

Weight is basically a force. It is the force by which earth attracts everything towards itself. The weight of an object changes from planet to planet, with the change in value of the gravitational acceleration (g).

Therefore, the relation between mass and weight of an object is given by the following formula:

W = mg

m = W/g

where,

m = mass = ?

W = Weight = 685 N

g = 9.8 m/s²

Therefore,

m = (685 N)/(9.8 m/s²)

<u>m = 69.9 kg</u>

4 0
3 years ago
Which of the following best describes the human population from early times to the present?
Makovka662 [10]

Answer:

We have a not significant increase of the population until 1700s or 1800s and then a significant increase growth from these years to the present.

Explanation:

From the figure attached we see the evolution of the human population since early times (1050).

We see that from 1050 until 1750-1850 we have an increase slowly with a low value for the increase per year.

But after these years (1750-1850) we see a considerable increase of the population, like an exponential model.

So then we can conclude in general terms this:

We have a not significant increase of the population until 1700s or 1800s and then a significant increase growth from these years to the present.

7 0
3 years ago
EXPLAIN THE WORKING OF A HYDRAULIC BRAKE
miss Akunina [59]

Answer:

heueiehhe8ehh38ehgeyegdhowgw8ehieerr

7 0
1 year ago
Other questions:
  • A 6.0-kg box slides down an inclined plane that slopes 39° to the horizontal. The box accelerates at a rate of 3.1 m/s^2. What i
    15·1 answer
  • A certain sports car can accelerate from 0 m/s to 27.7 m/sec with an acceleration of 11.2 m/s². How long does this acceleration
    7·1 answer
  • Which of the following are NOT two of the best ways to StaySafe around electricity?
    6·1 answer
  • How does the motion of an airplane compare to the motion of a rocket ?
    11·1 answer
  • What is the saturated zone
    5·1 answer
  • The main difference between distance and displacement is tat
    11·2 answers
  • 47. Calculate the final steady temperature obtained when
    7·1 answer
  • When magma is cooled, it changes into which of the following?
    13·2 answers
  • What is meant by the motion of a force​
    9·1 answer
  • 5
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!