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
Blababa [14]
3 years ago
7

PLEASE HELP WILL GIVE BRAINLIEST AND EXTRA POINTS!! Super simple I’ve just been sick so I have no clue what’s going on.

Physics
1 answer:
Tju [1.3M]3 years ago
4 0

Answer: 12) 1.07 m/s (right) 13) 4.05 m/s 14) 73 m/s 15) 10.9 m/s

Explanation:

12) Conservation of momentum. Momentum is the produce of mass and velocity.

13(2) + 15(-5) = 13(-5) + 15v

v = 1.06666... ≈ 1.07 m/s (right)

13) 18(9) + 22(0) = 18v + 22v

v = 18(9)/40 = 4.05 m/s

14) 0.65(35) + 0.08(0) = 0.65(26) + 0.08v

v = 73.125

15) This is a bit trickier. Let's ASSUME you jump off at 7 m/s relative to the truck. Doing this, we can assume that the reference frame is moving along with the truck at 10 m/s

the conservation of momentum equation becomes

600(0) + 80(0) = 600v + 80(-7)

v = 0.9333333... m/s

adding back the velocity of the reference frame means the truck is now traveling.

10.9333333... ≈ 10.9 m/s

You might be interested in
A quantity of gas is contained in a sealed container of fixed volume. The temperature of the
Alchen [17]

Answer:

If the Kelvin temperature of a gas is increased, the volume of the gas increases. This can be understood by imagining the particles of gas in the container moving with a greater energy when the temperature is increased.

Explanation:

If you heat a gas you give the molecules more energy so they move faster. This means more impacts on the walls of the container and an increase in the pressure. Conversely if you cool the molecules down they will slow and the pressure will be decreased.

To calculate a change in pressure or temperature using Gay Lussac's Law.

6 0
3 years ago
David is investigating the properties of soil using the sample shown.
charle [14.2K]

Answer:

IT IS A BC ION KNOW WHY

Explanation:

5 0
2 years ago
Look at paths of the projectiles. What effect does air resistance have on the projectile?
inna [77]

Answer:

Therefore the resistance of the air makes the movement not parabolic but shorter in each direction

Explanation:

The projectile motion is described by the kinematics equations giving a parabolic trajectory, where on the x axis there is no acceleration and on the y axis the acceleration is the acceleration of gravity.

When the air resistance is taken into account it can be approximated as a force that opposes the movement that for low speeds is proportional to the speed of the space.

Consequently, the movement in the axis and the acceleration is less, in some cases it can be so small that the constant handle speed, in this case, is called terminal velocity.

On the x-axis the friction force creates an acceleration in the negative direction of the movement that the projectile has to brake.

Therefore the resistance of the air makes the movement not parabolic but shorter in each direction.

6 0
3 years ago
Which one of the following acts is an example of body language?
Viktor [21]
Rolling of the eyes. The person is either vexed or frustrated.
6 0
3 years ago
Read 2 more answers
Hii! help asap. i’ll give brainliest thanks!
o-na [289]

I believe it’s the mass of the box but I don’t no if I’m right

Hope this helped
5 0
3 years ago
Other questions:
  • How long would it take for a ball dropped from the top of a 484-foot building to hit the ground? round your answer to two decima
    7·1 answer
  • A student throws a rock upwards. The rock reaches a maximum height 2.4 seconds after it was released. How fast was the rock thro
    13·1 answer
  • PLEASE HELP ME ASAP!!!
    11·2 answers
  • Which of the following is an example of a cultural control of pests?
    11·2 answers
  • A disk between vertebrae in the spine is subjected to a shearing force of 425 N. Find its shear deformation, taking it to have a
    13·1 answer
  • Please help on this one? :)
    7·1 answer
  • 2 Points
    13·2 answers
  • While Steve is trekking in the Rocky Mountains, he realizes that he does not have a compass. He decides to find north direction
    8·1 answer
  • What is the difference between speed and velocity?
    15·1 answer
  • Mary is investigating the densities of objects. She is going to use the table below to record her results. Which of these can sh
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!