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
Fed [463]
3 years ago
5

A sprinter set a high school record in track and field, running 200.0 m in 21.7 s . What is the average speed of the sprinter in

kilometers per hour?
Chemistry
1 answer:
Yuliya22 [10]3 years ago
7 0

Given data:

Distance travelled (d)= 200.0 m

Time taken (t) = 21.7 s

To determine:

The average speed in km/hr

Calculation:

Convert distance from m to km

1000 m = 1 km

200.0 m = 1 km * 200.0 m/1000 m = 0.2 km

Convert time from sec to hours

3600 sec = 1 hour

21.7 sec = 1 hour * 21.7 sec/3600 sec = 6.027 *10^-3 hrs

Speed is defined as the amount of distance travelled per unit time

Speed = distance/time = 0.2 km/6.027*10^-3 hr

           = 33.18 km/hr (or 33.2 km/hr)

You might be interested in
How many moles are in 50 g of CO2
murzikaleks [220]

Answer:

1.1 mol

Explanation:

n=m/M, where n is moles, m is mass, and M is molar mass.

M of CO2 = 12.01+16.00+16.00 = 44.01g/mol

n=50g/44.01g/mol

n = 1.13610543 mol

n ≈ 1.1 mol

Hope that helps

8 0
2 years ago
What poisonous gas is found in the exhaust fumes of car engines?
Ugo [173]
The toxic gar expelled from the reaction between gasoline and oxygen in the vehicle's engine is both Carbon dioxide and monoxide
4 0
3 years ago
Read 2 more answers
Three Chemistry students find a bottle of colorless liquid in the laboratory and each makes a different suggestions about the id
astra-53 [7]

Answer:

and the question is?

Explanation:

3 0
3 years ago
Can y'all help me with number 4
astraxan [27]
I think the answer is A but i'm not sure
6 0
3 years ago
Read 2 more answers
Which correctly lists the types of matter, in terms of their atoms, in order from least tightly packed to most tightly packed?
SSSSS [86.1K]

Answer:

D

Explanation:

gas are well separated with no regular arrangement and spreaded all over. liquid are close together with no regular arrangement and slightly spreaded. solid are tightly packed, usually in a regular pattern and not spreaded at all.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Which property of potential energy distinguishes it from kinetic energy?
    9·1 answer
  • What is the 25 element in chemistry
    5·1 answer
  • Why are most solid ionic compounds electrically nonconductive, whereas aqueous solutions of ionic compounds are good conductors
    14·1 answer
  • Question 2 (Mandatory) (2 points)
    11·1 answer
  • Can some tell me plz
    8·2 answers
  • Which of these is a balanced chemical equation?
    10·2 answers
  • Silicon is in the same group of the Periodic Table as carbon. The compound
    15·1 answer
  • Do You Know That If you put a Grape in the microwave it will go on Fire!?
    9·1 answer
  • Tom looks very different from his parents he has brown eyes and his parents have blue eyes is he adopted??
    7·2 answers
  • I need help pleaseee!!!!!!!! Fast
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!