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
abruzzese [7]
3 years ago
5

If a 54 kg sprinter can accelerate from a standing start to a speed of 10 m/s in 3 s, what average power is generated?

Physics
1 answer:
lora16 [44]3 years ago
3 0

Answer:

Power, P = 600 watts

Explanation:

It is given that,

Mass of sprinter, m = 54 kg

Speed, v = 10 m/s

Time taken, t = 3 s

We need to find the average power generated. The work done divided by time taken is called power generated by the sprinter i.e.

P=\dfrac{W}{t}

Work done is equal to the change in kinetic energy of the sprinter.

P=\dfrac{\dfrac{1}{2}mv^2}{t}

P=\dfrac{\dfrac{1}{2}\times 54\ kg\times (10\ m/s)^2}{3\ s}

P = 900 watts

So, the average power generated by the sprinter is 900 watts. Hence, this is the required solution.

You might be interested in
Gravity keeps earth orbiting the sun. Earth is about 93,205,679 miles from the sun. What does this distance tell you about the m
Tpy6a [65]
The planets near the sun are smaller (and made out of rock or earth )
6 0
4 years ago
Read 2 more answers
A 36,287 kg truck has a momentum of 907,175 kg • . What is the truck’s velocity?
Snowcat [4.5K]
By definition,
Momentum = Mass * Velocity

Let v =  the velocity of the truck, m/s
The mass of the truck is 36,287 kg.
The momentum is 907,175 (kg-m)/s.

Therefore
907,175 (kg-m)/s = (36287 kg)*(v m/s)
v = 907175/36287 = 25 m/s

Answer: 25 m/s

7 0
4 years ago
Read 2 more answers
Order these sounds from loudest (1)
xz_007 [3.2K]

Answer:

1. Airplane

2. Crowd at sporting

3. Event

4. Rainfall

5. Whisper

7 0
3 years ago
Read 2 more answers
A loop of wire is placed in a uniform magnetic field. Let ø be the angle between the direction of b and the normal. At which val
zaharov [31]

Answer:

B. 0 degrees

Explanation:

The magnetic flux through a certain area enclosed by a loop of wire immersed in a region with magnetic field is given by:

\Phi = B A cos \theta

where

B is the strength of the magnetic field

A is the area enclosed by the coil

\theta is the angle between the direction of the magnetic field and the direction of the normal to the coil

From the equation above, we see that the magnetic flux is maximum when

cos \theta=1

So when the field is parallel to the normal to the coil (so, when it is perpendicular to the coil), therefore when:

\theta=0^{\circ}

So, the correct option is

B. 0 degrees

5 0
4 years ago
If a wave has a frequency of 6 waves per second and a wavelength of 10 m, what is the wave's speed?
meriva
0.6 is the answer
Hope this helped
6 0
3 years ago
Other questions:
  • The components of the FITT principle include Frequency, Intensity, Time, Type. True or False
    13·1 answer
  • Which parts of the body act as levers? a. muscles b. joints c. bones d. veins
    13·2 answers
  • What is the primary cause for the change in seasons?
    6·2 answers
  • In the lab, a student is investigating the effects of texting and driving on reaction time. A
    11·1 answer
  • In which of these scenarios would the sound of the drumstick hitting the metal bar get to you in the least amount of time? Expla
    15·2 answers
  • Solubility refers to a substance's ability to break apart water molecules.
    12·1 answer
  • Which is the basis of the major rock classifications?
    10·1 answer
  • The available source of charge that pushes a charge through a circuit is
    12·1 answer
  • Which example provides a complete scientific description of an object in motion? the vibration of the jackhammer broke through t
    12·2 answers
  • How does the 3rd Newtons Law apply to kicking a soccer ball?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!