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
mixer [17]
3 years ago
9

A baseball on a T-ball stand has no momentum until it is hit with a bat. When Tyler swings the bat, it has a momentum of 12 kg m

/s. After the bat hits the ball, the ball has a momentum of 8 kg m/s. What is the momentum of the bat AFTER it hits the ball?
A) 0 kg m/s
B) 4 kg m/s
C) 5 kg m/s
D) 8 kg m/s
Physics
1 answer:
NeTakaya3 years ago
4 0

Answer:

4 kg m/s (option B)

Explanation:

We use conservation of momentum to solve this problem.

In the initial state, the ball has momentum zero (no momentum), and the bat has a momentum of 12 kg m/s.

Since the momentum of the system that interacts ("bat plus ball"), has to be conserved (that means the final total momentum must equal the initial total momentum), we have:

Total initial momentum = 0 kg m/s + 12 kg m/s = 12 kg m/s

Total final momentum = 8 kg m/s + X

where X is our unknown: the final momentum of the bat, and 8 kg m/s is the final momentum of the ball.

We make these two quantities equal since the total momentum has to e conserved, and solve for the unknown X in the equation:

Total initial momentum = Total final momentum

12 kg m/s = 8 kg m/s + X

12 kg m/s - 8 kg m/s = X

X = 4 kg m/s

You might be interested in
A 1 kg pistol, initially at rest, shoots a bullet with a mass of 2.5g. After
Allisa [31]

Answer:

Use the principle of momentum

Initial momentum = final momentum

Momentum formula = Mass * Velocity

Explanation:

6 0
2 years ago
(1) A net force of 265 N accelerates a bike and rider at 2.30 m/s. What is the mass of the
kati45 [8]

Answer: 115.2kg

Explanation:

Net force = 265 N

Acceleration of bike & rider = 2.30m/s2 (The SI unit of acceleration is m/s2)

Mass of the bike and rider together = ?

Since force is the product of the mass of an object and the acceleration by which it moves, Force = Mass x Acceleration

265N = Mass x 2.30m/s2

Mass = (265N/2.30m/s2)

Mass = 115.2 kg

Thus, the Mass of the bike and rider together is 115.2kg

6 0
3 years ago
Find average speed when time= 27s and total distance is 94m
Slav-nsk [51]
3.4814815 (or 3 13/27) m/s

speed = distance/time
3.4814815 (or 3 13/27) = 94/27

8 0
3 years ago
Which of these statements is false? Question 18 options:
Katarina [22]

True because the kind of light we get is white light and everything we see is actually every colour except the color we are seeing because that is wwhat is reflected

6 0
3 years ago
Energy Transformation
Serjik [45]

Answer:

<em>K =400000 J</em>

Explanation:

<u>Kinetic Energy</u>

Is the energy an object has due to its state of motion. It's proportional to the square of the speed.

The equation for the kinetic energy is:

\displaystyle K=\frac{1}{2}mv^2

Where:

m = mass of the object

v = speed at which the object moves

The kinetic energy is expressed in Joules (J)

The car has a mass of m=2000 Kg and travels at v=20 m/s. Calculating the kinetic energy:

\displaystyle K=\frac{1}{2}2000*20^2

Calculating:

K =400000 J

3 0
3 years ago
Other questions:
  • Vector A is 3 m long and vector B is 4 m long. The length
    13·1 answer
  • A cannonball is launched off a 100 m cliff horizontally with an initial velocity of 50 m/s. The goal is to have the cannonball t
    11·1 answer
  • LW Hydraulic engineers in the United States often use, as a unit of volume of water, the acre-foot, defined as the volume of wat
    12·1 answer
  • Elaborate on the reason that "cola" type drinks are used to make effective marinades.
    13·2 answers
  • What would happen if earth was further from the sun
    14·2 answers
  • The loaded car of a roller coaster has mass M = 320 kg. It goes over the highest hill with a speed v of 21.4 m/s. The radius of
    12·1 answer
  • What is the average kinetic energy of an object's particles?
    13·2 answers
  • Select the correct answer.
    7·1 answer
  • The bottom of the hockey stick is called a?
    7·1 answer
  • What do ethical guidelines for research with human subjects mean?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!