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
notka56 [123]
3 years ago
7

Holden is trying to determine the velocity of his race car. He went 20 meters east, turned around, and went 40 meters west. He t

urned the car one more time and went 35 meters east. His car was 15 meters from the starting line. This took 5 seconds. What is the car’s velocity?
Physics
2 answers:
AleksandrR [38]3 years ago
6 0

Answer:

3 m /s

Explanation:

Average velocity is defined as the ratio of total displacement to the total time taken. The formula of average velocity is given by

Average velocity = \frac{Total displacement}{Total time taken}

Take east direction is positive and west is negative.

Here the total displacement is

d = 20 - 40 + 35 = 15 m

t = 5 second

Average velocity = 15 / 5 = 3 m/s

kotegsom [21]3 years ago
3 0
 (15 meters east) / (5 sec) = 3 meters/ sec east
You might be interested in
A thin, 100 g disk with a diameter of 8.0 cm rotates about an axis through its center with 0.15 J of kinetic energy. What is the
butalik [34]

Answer:

v=2.45 m/s

Explanation:

The rotational kinetic energy is calculated with:

K=\frac{I\omega^2}{2}

The moment of inertia of a disk is:

I=\frac{mr^2}{2}

A point on the rim of a disk will have a speed of:

v=r\omega

Putting all together:

v=r\sqrt{\frac{2K}{I}}=r\sqrt{\frac{2(2K)}{mr^2}}=2\sqrt{\frac{K}{m}}

Which for our values is:

v=2\sqrt{\frac{0.15J}{0.1Kg}}=2.45m/s

3 0
4 years ago
Read 2 more answers
2. If you exert a force of 10.0 N to lift a box a distance of 0.9 m, how much work have you done?
KonstantinChe [14]
<span> force of 10.0 N
</span>
<span>distance of 0.9 m
w=f*d
w=10*0.9
=9.0 j</span>
6 0
3 years ago
Read 2 more answers
2.486 L is equal to:
swat32
Is equal to 2486 milliliters
8 0
3 years ago
Read 2 more answers
Can you come up with a mathematical relationship, based on your data that shows the relationship between distance from the charg
zalisa [80]

Answer:

Explanation:

This question appears incomplete because of the absence of the data been talked about in the question. However, there is a general ruling here and it can be applied to the data at hand.

If an increase in the distance of charges (let's denote with "d") causes the electric field strength (let's denote with"E") to increase, then the mathematical representation can be illustrated as d ∝ E (meaning distance of charge is directly proportional to electric field strength).

But if an increase in the distance of the charges causes the electric field strength to decrease, then the mathematical representation can be illustrated as d ∝ 1/E (meaning distance of charge is inversely proportional to electric field strength).

A scatterplot can also be used to determine this. If there is a positive correlation (correlation value is greater than zero but less than or equal to 1) on the graph, then it is illustrated as "d ∝ E" BUT if there is a negative correlation (correlation value is less than zero but greater than or equal to -1), then it can be illustrated as "d ∝ 1/E".

4 0
3 years ago
A space craft is traveling in interplanetary space at a constant velocity. what is the estimated distance traveled by the space
mina [271]

Answer:

A. 2.30 x 10^2 kil

Explanation:

3/2 = 1.5 and 0.72/2 = 0.36

1.93 + 0.36 = 2.29

2.29 = about 2.30

7 0
3 years ago
Other questions:
  • An object weighs 55.54 newtons. What is its mass if a gravitometer indicates that g = 9.83 m/s2?
    10·1 answer
  • Who was brilliant mathematician used the data of tycho brahe to prove accuracy of copernicus basic ideas of motion of planets?
    10·1 answer
  • Kinetic Energy - What does it depend on?
    8·1 answer
  • Vx = 20 m/s , vy = 40 m/s . find the vector's direction. express your answer using two significant figures.
    15·2 answers
  • The Northridge, California, earthquake of 1994 had a magnitude of 6.8 on the Richter scale. A year later, a 7.2-magnitude earthq
    12·1 answer
  • Plz help due in a hour
    5·1 answer
  • Turn this scentence to repirted speach.<br><br>i ate icecream<br>She said that..........​
    9·2 answers
  • A bungee jumper who is about to jump has her energy stored entirely as
    13·1 answer
  • 5. The force per unit charge is known as
    5·1 answer
  • Determine the distance above Earth's surface to a satellite that completes four orbits per day.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!