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
Nadya [2.5K]
3 years ago
10

A biker goes out for a ride and begins riding North at 18 km/h for 200 minutes, then the driver turns around and rides at 12 km/

h South for another 50 minutes.
Physics
1 answer:
Juliette [100K]3 years ago
4 0

Answer:

Explanation:

18 km / h

= 300 m / min

12 km / h = 200 m / min

distance travelled in 200 minutes = 300 x 200 = 60000 m

distance travelled in 50 minute in return journey = 200 x 50 = 10000 m

total distance travelled = 70000 m

total time = 250 minute

speed = 70000 / 250

= 280 m / min

= 16.8 km / h

Total displacement = 60000 - 10000 = 50000 m

total time = 250 min

velocity = 50000 / 250

= 200 m / min

= 12 km / h

You might be interested in
What is the pressure exerted by a column of fresh water 10m high<br>(p=1000kg/m3 and g=10m/s)​
alexira [117]
  • Height (h) = 10 m
  • Density (ρ) = 1000 Kg/m^3
  • Acceleration due to gravity (g) = 10 m/s^2
  • We know, pressure in a fluid = hρg
  • Therefore, the pressure exerted by a column of fresh water
  • = hρg
  • = (10 × 1000 × 10) Pa
  • = 100000 Pa

<u>Answer</u><u>:</u>

<u>1000</u><u>0</u><u>0</u><u> </u><u>Pa</u>

Hope you could understand.

If you have any query, feel free to ask.

8 0
3 years ago
How can u tell matched forces act on objects?
mamaluj [8]

Answer:If an object's speed changes, or if it changes the direction it's moving in,

then there must be forces acting on it. There is no other way for any of

these things to happen.

Once in a while, there may be a group of forces (two or more) acting on

an object, and the group of forces may turn out to be "balanced".  When

that happens, the object's speed will remain constant, and ... if the speed

is not zero ... it will continue moving in a straight line.  In that case, it's not

possible to tell by looking at it whether there are any forces acting on it

3 0
3 years ago
What r three positive results of a variation within a population that occur due to natural selection
Phoenix [80]

Answer:

Traits, evolution, adaptive

4 0
3 years ago
What's the difference between V8 and V12 diesel engine? which one is better and why​
MrRissso [65]

Answer:

Nanotechnology refers to the branch of science and engineering devoted to designing, producing, and using structures, devices, and systems by manipulating atoms and molecules at nanoscale, i.e. having one or more dimensions of the order of 100 nanometres (100 millionth of a millimetre) or less.

Explanation:

8 0
2 years ago
1. Johnny wants to know where the water line is in a dark well. He drops a penny into the well and counts until he hears the pen
777dan777 [17]

Answer:

3 feet down

Explanation:

i think

8 0
3 years ago
Other questions:
  • How an elastic material can no longer be elastic but plastic instead?
    6·1 answer
  • This is the question with the options
    12·1 answer
  • What energy powers the star throughout its life?
    14·1 answer
  • When a candle burns, which forms of energy does the chemical energy in the candle change to?
    5·1 answer
  • Some pipe organs create sounds lower than humans can hear. This ""infrasound"" can still create physical sensations. What is the
    15·1 answer
  • A 350 −Ω resistor and a 6.40 −μF capacitor are connected in parallel to an ac generator that supplies an rms voltage of 220 V at
    13·1 answer
  • Consumers influence how goods and services are made by _____. a.selling organic products, such as fruits
    6·2 answers
  • Does a compressed spring transfer elastic energy to its surroundings?
    12·1 answer
  • a 10kg model rocket is fired at a 60 degree angle from horizontal from the football field with a thrust of 200N. what is the acc
    9·1 answer
  • A person is trying to ride a bike all the way round the inside of a pipe for a stunt in a film. The filmmaker wants to know what
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!