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
nikitadnepr [17]
3 years ago
15

Rita jeptoo of kenya was the first female finisher in the 110th boston marathon. she ran the first 10.0 km in a time of 0.5689 h

. assume the race course to be along a straight line. (a) what was her average speed during the first 10.0 km segment of the race? (b) she completed the entire race, a distance of 42.195 km, in a time of 2.3939 h. what was her average speed for the race?
Physics
1 answer:
stira [4]3 years ago
8 0

Part a

Answer: 17.58 km/h

Average speed=\frac{Total\hspace{1mm}Distance}{Total\hspace{1mm}Time}

Total Distance =10 km

Total time =0.5689 h

\Rightarrow Average speed=\frac{10\hspace{1mm}km}{0.5689\hspace{1mm}h}=17.6 \hspace{1mm}km/h

Part b

Answer: 17.626 km/h

Average speed=\frac{Total\hspace{1mm}Distance}{Total\hspace{1mm}Time}

Total Distance =42.195 km

Total time =2.3939 h

\Rightarrow Average speed=\frac{42.195\hspace{1mm}km}{2.3939\hspace{1mm}h}=17.626\hspace{1mm}km/h

You might be interested in
Oxygen forms many compounds.<br> Which two compounds of oxygen are small molecules?
Liono4ka [1.6K]

Answer:

Water and Oxides such as iron oxide or rust

Explanation:

8 0
3 years ago
Dòng điện dịch là:
yarga [219]

Answer: the answer is a

Explanation:

8 0
3 years ago
What happens to jetstream’s as they get closer to the equator
MAVERICK [17]

Answer:They stop because jet streams follow boundaries between hot and cold air.

Explanation:

6 0
3 years ago
Read 2 more answers
A 15.0 m long steel rod expands when its temperature rises from 34.0 degrees C to 50.0 degrees C. What is the change in the beam
azamat
0.00288................
8 0
3 years ago
Read 2 more answers
Hello,help me with this out please i need it hurry but please ensure your answer is correct..I attach here with my question.
lilavasa [31]

Answer:

.409 N

Explanation:

For this to balance, the moments around the fulcrum must sum to zero.

On the left you have   .21   ( is that down? I will assume it is)

      Counterclockwise moments :

        .21 * 40     +  1.0 * 20    

     Clockwise moments :

        .5 * 20     +     F * 45

these moments must equal each other

.21*40 + 1 *20   =  .5 * 20 + F * 45

   F = .409 N

7 0
2 years ago
Other questions:
  • Calculate the velocity of the object in the graph during the following time interval 0-6 seconds. Also, during which time interv
    14·1 answer
  • All waves carry a) energy B) light C) matter D) particles
    15·2 answers
  • Tendons are strong elastic fibers that attach muscles to bones. To a reasonable approximation, they obey Hooke's law. In laborat
    14·1 answer
  • According to the kinetic theory, all matter is composed of _______.
    11·2 answers
  • PLEASE HELP!!!!<br> Define constructive interference.
    6·1 answer
  • A disk with a rotational inertia of 2.5 kg-m2 and a radius 1.1 m rotates on a frictionless fixed axis perpendicular to the disk
    14·1 answer
  • Explain the term diffraction​
    8·1 answer
  • Scientists might live too far away to meet face to face. What are the three other ways they can share data and discuss evidence?
    9·2 answers
  • What causes the amount of gravitational force to change?
    5·2 answers
  • A weight of 200 n is hung from a spring with a spring constant of 2500 n/m and lowered slowly. How much will the spring stretch?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!