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
Travka [436]
3 years ago
6

A child rides her bike at a rate of 12.0 km/hr down the street. A squirrel suddenly runs in front of her so she applies the brak

es and slows to 8.0 km/hr in 0.25 sec. What is the acceleration of the bike rider during this period?
Physics
2 answers:
olya-2409 [2.1K]3 years ago
6 0

it should be 16 kilometers per second

Sedbober [7]3 years ago
3 0
By v = u - at 
<span>=>8 = 12 - a x 0.25 </span>
<span>=>a = 4/0.25 km/hr/sec </span>
<span>=>a = 16km/hr/sec

I hope this helped!</span>
You might be interested in
In an electric furnace used for refining steel, the temperature is monitored by measuring the radiant power emitted through a sm
stiks02 [169]

Answer: 3.7×10¹²watts

Explanation:

Radiation is one of the mode of heat transfer and modes differs from each other based on their medium of heat transfer. Radiation is a process of transferring heat energy from one point to another without heating the intervening medium (no material medium is required).

According to Stefan's law of radiation, the rate of emission of radiant energy is directly proportional to the fourth power of its absolute temperature.

Mathematically, R = eAT⁴

e is constant of proportionality called emissivity. Emissivity varies depending on the type of body being considered.

For the question, we are considering black body and emissivity of black body is 1 being a perfect body.

A is the area of the body

T is the absolute temperature

e = 1

A = 0.5cm²

T = 1650°C

Rate of radiation = 1×0.5×1650⁴

= 3.7×10¹²watts.

The hole will therefore radiate 3.7×10¹²watts

3 0
3 years ago
Which of these reduces fnction?
Shtirlitz [24]

Answer:

The answer is C. Ball Bearings

3 0
3 years ago
Read 2 more answers
22. True or False? When holding the hockey stick properly, players keep two hands on it for control and the blade stays low to t
umka21 [38]

Answer:

true msjnsnaks nsnaufitskclyc86xoyc

3 0
2 years ago
Heyyyy! can some tell me if im right?​
White raven [17]

Answer:

no the answers r b, d, r, and f

Explanation:

5 0
3 years ago
Read 2 more answers
You push really hard against a round rock, but you cannot make it roll. Which statement best explains why you cannot move the ro
Burka [1]

Answer:

Its B

Explanation:

I searched it up :>

8 0
2 years ago
Other questions:
  • Researchers condition a flatworm to contract when exposed to light by repeatedly pairing the light with electric shock. the elec
    11·1 answer
  • 1 - It is okay to use slang on a record as long as the auditor can interpret it.
    8·1 answer
  • a scientist is creating a new synthetic material. the material’s density is 6.1 g/cm3. which sentences describe how the scientis
    14·2 answers
  • How many years does one mouth symbolize on the cosmic calendar
    8·1 answer
  • What percentage of all traffic deaths occur in cars traveling less than 60 mph?
    9·1 answer
  • The electrons can be modeled as forming a uniform shell of negative charge. What net electric field do they produce at the locat
    14·1 answer
  • A light wave travels through space at a speed of 3 x 108 m/s. If the wavelength of some light wave is 2 x10-3 m, what is the fre
    6·1 answer
  • 1) Si un mango cae a una velocidad de 75m/s y tarda 26 seg. en caer. ¿ Cuál habrá sido la velocidad con qué el mango llegó al su
    5·1 answer
  • What is the definition for the term density
    11·2 answers
  • Which of these will NOT help reduce c02 levels in the atmosphere?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!