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
Iteru [2.4K]
3 years ago
13

Lila is a track and field athlete. She has to complete four laps around the track, which is 400 meters. The race took her 6 minu

tes to complete.
Which best describes her speed and velocity?

A)Her speed is 4.4 m/s, and her velocity is 0 m/s.
B)Her speed is 0 m/s, and her velocity is 2400 m/s.
C)Her speed is 4.4 m/s, and her velocity is 4.4 m/s.
Mathematics
2 answers:
sleet_krkn [62]3 years ago
4 0

Answer:  A)Her speed is 4.4 m/s, and her velocity is 0 m/s.

Step-by-step explanation:

The formula to calculate the speed is given by :-

\text{Speed}=\dfrac{\text{Distance}}{\text{Time}}

Given: The length of the track = 400 meters

Time taken to complete 4 laps = 6 minutes =

The total distance covered in 4 laps = 4\times400=1600\text{ meters}

Now, her speed is given by :-

\text{Speed}=\dfrac{1600}{6\times60}}\approx4.44\text{ m/s}

Since the starting point and the ending point is same , then the her displacement is zero.

Hence,  velocity =0

nlexa [21]3 years ago
3 0
The answer is A. 
Speed = distance / time
Speed = (4*400) / (6*60)    (6*60 to turn minutes to seconds)
Speed = 1600 / 360
Speed = 4.44

Velocity = displacement / time
since she is running in a circle, she stops where she started making he displacement 0
Velocity = 0 / 6*60
Velocity = 0


You might be interested in
23. Tell whether the sequence is arithmetic. If it is, what is the common difference? (1
Airida [17]

Answer:   O Yes; 6

Yes it is Arithmetic;  the difference is 6

Step-by-step explanation:

If the numbers keep changing by the same value being added or subtracted, it is Arithmetic.

-15 - (-9) = -6    -9 - (-3) = -6    -3 - 3 = -6

"Same difference"  as the saying goes!

4 0
3 years ago
Solve the following system of equations:
PSYCHO15rus [73]
If we multiply the first equation by 2 we get
2x - 4y = 12
but the second equation is
2x - 4y = 10

2x - 4y can't have 2 different values  so the are no solutions 
7 0
3 years ago
Read 2 more answers
Plz answer ASAP tysm !
Alex777 [14]

Answer:

I already did

Step-by-step explanation:

6 0
3 years ago
Jeff has 4 red pens and 2 blue pens in his backpack. He also has 1 yellow highlighter and 4 green highlighters in his
Romashka-Z-Leto [24]

Answer:

\frac{1}{15}

Step-by-step explanation:

In probability,

"AND" means "multiplication"

"OR" means "ADDITION"

We want probability of Blue Pen and Yellow Highlighter. So we find individual probabilities and "MULTIPLY" them.

Let P(b) be probability of blue pen

Let P(y) be probability of yellow highlighter

We know probability of event is that event divided by total number of that

So,

There are 4 + 2 = 6 pens

Blue pen = 2

Hence,

P(b) = 2/6 = 1/3

And,

There are 5 highlighters

Yellow highlighter = 1

Hence,

P(y) = 1/5

Now,

P(b and y) = 1/3 * 1/5 = 1/15

Hence,

probability of grabbing blue pen and a yellow highlighter is  \frac{1}{15}

3 0
3 years ago
Read 2 more answers
Graph the function f(x) = -1/4 x - 2 <br><br>just tell me the points
cupoosta [38]
Two points are (0,-2) and (400,-102).
8 0
3 years ago
Other questions:
  • A city is designing a new trail system that will be 6 1/8 miles long. They plan on placing 49 mileage signs to show the distance
    11·2 answers
  • Please help (look @ pic)
    15·1 answer
  • Derek buys a $2,230 car with a $580 trade-in. How much extra money does he pay?
    5·1 answer
  • 6's - 10 equal 2 + 3 S Plus s
    13·2 answers
  • 8 and 21 over 40 in decimal and by step plzzzzzz thank u ill rate it
    5·1 answer
  • What are the least common multiples of 7 and 11
    12·1 answer
  • What is the slope of the line through (-1, 2) and (-3,-2)?
    7·1 answer
  • Thomas received $200.00 for his birthday. He worked building cabinets for 3 days and made $48.75 per day. Then he bought a new d
    5·2 answers
  • Find the probability of choosing the 5 winning lottery numbers when the numbers are chosen at random from 0 to 9.
    6·1 answer
  • Please help me I need this for exam tomorrow and can u please show the working
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!