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
noname [10]
2 years ago
11

Need help 8th grade science test need help

Physics
2 answers:
jolli1 [7]2 years ago
7 0
ANSWER: d, average speed
Liula [17]2 years ago
7 0

Answer:

c or d

Explanation:

hopes this helps :)

You might be interested in
Which acceleration-time graph corresponds to the motion of the car if it moves toward the right, while slowing down at a steady
Bumek [7]

We define acceleration as the rate of change of the velocity

Thus, if you have positive velocity and positive acceleration, your <u>speed increases.</u>

If you have positive velocity and negative acceleration, your speed decreases.

Now you get the idea, we will see that the correct option is graph 1.

We know that the car moves towards the right (let's define this as "the car has positive velocity") and we also know that te car is slowing down constantly (thus the acceleration needs to be negative and constant).

By looking at the graphs, the only one with these properties is graph 1.

If you want to learn more, you can read:

brainly.com/question/12550364

5 0
2 years ago
The density of a certain type of plastic is 0.75 g/cm3 . If a sheet of this plastic is 10.0 m long, 1.0 m wide, and 1 cm thick,
Oksanka [162]

Answer:

7.5 g

Explanation:

8 0
3 years ago
Why was Dalton's atomic theory difficult for other scientists to accept? please help?!!!!!
Debora [2.8K]
It is cellmicktomic atoms
7 0
3 years ago
A man weighs himself twice in an elevator. When the elevator is at rest, he weighs 824 N; when the elevator starts moving upward
kifflom [539]

Answer: c. 1.3 m/s^2

Explanation:

When he is at rest, is weight can be calculated as:

W = g*m

where:

m = mass of the man

g = gravitational acceleration = 9.8m/s^2

We know that at rest his weight is W = 824N, then we have:

824N = m*9.8m/s^2

824N/(9.8m/s^2) = m = 84.1 kg

Now, when the elevators moves up with an acceleration a, the acceleration that the man inside fells down is g + a.

Then the new weight is calculated as:

W = m*(g + a)

and we know that in this case:

W = 932N

g = 9.8m/s^2

m = 84.1 kg

Then we can find the value of a if we solve:

932N = 84.1kg*(9.8m/s^2 + a)

932N/84.1kg = 11.1 m/s^2 = 9.8m/s^2 + a

11.1 m/s^2 - 9.8m/s^2 = a = 1.3 m/s^2

The correct option is C

3 0
3 years ago
A century ago, swords were made from various metals, especially steel. The property that makes steel a good choice for sword mak
Nikolay [14]
The answer is a solid
5 0
3 years ago
Other questions:
  • How did the southeastern United States drought affect the bottling operations of Pepsi and Coca-cola?
    14·1 answer
  • If we relied solely on the nonrenewable resources found in the U.S., which one would we run out of first at current usage levels
    5·2 answers
  • What type of silicate mineral is olivine?
    12·2 answers
  • Describe the trip from your home to school using the words position, distance, displacement, and
    13·1 answer
  • What is a lunar eclipse?
    14·2 answers
  • What key ingredient in the modern condensation theory was missing or unknown in the nebula theory?
    7·1 answer
  • What is the term for the ability to cause change in matter?
    6·1 answer
  • Most of the motion generated by joints in the human body are examples of levers. An example of a third class lever is the forear
    15·1 answer
  • Facts about conolizing into mars?​
    5·1 answer
  • Which of these units is most appropriate to use when measuring the mass of a person?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!