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
fgiga [73]
3 years ago
14

Towards the end of a 400m race, Faisal and Edward are leading and are both running at 6m/s. While Faisal is 72m from the finish

line Edward is 100m from the finish line. Realising this and to beat Faisal, Edward decides to accelerate uniformly at 0.2 m/s2 until the end of the race while Faisal keeps on the same constant speed. Does Edward succeed in beating Faisal
Physics
1 answer:
Marta_Voda [28]3 years ago
5 0

Answer:

NO

Explanation:

To determine this, we have to firstly determine the time it took Faisal to complete the race with 72 meters left and then the speed Edward used for the final 100 meters (with both distance occurring at the same point in time).

To determine the time it took Faisal from that onward, we use the formula

Speed = distance/time

Since Faisal maintained his speed at the end of the race, the speed will be 6 m/s while distance at the end to be covered his 72 m. Thus

6 = 72/time

time = 72/6

time = 12 seconds; It will take Faisal 12 seconds to complete the race from that point.

For Edward, he accelerated uniformly (for 0.2 m/s²) after running at a constant speed of 6 m/s. Thus, the time it would have taken him to complete (at a speed of 6 m/s) the final 100 m would be

speed = distance/time

6 = 100/time

time = 100/6

time = 16.67 s.

However, he accelerated uniformly at 0.2m/s², hence to get the speed, the formula; speed = acceleration × time will be used

speed = 0.2 × 16.67

speed = 3.334 m/s

To determine the time it took Edward from 100 meters away,

speed = distance/time

3.334 = 100/time

time = 100/3.334

time = 29.94 seconds

<u>It would have taken Edward 29.94 seconds to complete the race, hence he would not have succeeded in defeating Faisal</u>

You might be interested in
1. How does the mass of Jupiter compare to Earth?
sammy [17]

Answer:

1.

Jupiter is the largest planet in the solar system. (Image credit: NASA)

The largest planet in the solar system, the gas giant Jupiter is approximately 318 times as massive as Earth. If the mass of all of the other planets in the solar system were combined into one "super planet," Jupiter would still be two and a half times as large.

2.Rotation of Jupiter

[/caption]

Jupiter has the fastest rotation of all the planets in the Solar System, completing one rotation on its axis every 9.9 hours.

3.Jupiter, the King of the Planets, is a gas giant, which means that it's made mostly of gases like hydrogen and helium, and that it doesn't have a solid surface in the way that rocky planets like Earth do. With a temperature of 130 K (-140 C, -230 F), it's so cold that it gives off most of its energy in the infrared. In fact, Jupiter gives off almost twice as much heat as it receives from the Sun. It's able to do this because it has its own internal heat source, powered by the slow gravitational collapse that started when the planet first formed. Astronomers estimate that Jupiter is currently shrinking by almost 2 cm per year

6 0
3 years ago
Light can travel from the sun to ________ in less than ten minutes.
Solnce55 [7]
To the Earth in less than ten minutes. 
5 0
3 years ago
2) The horizontal and vertical components of the initial velocity of a football are 16 m/s and 20 m/s respectively. How long doe
ValentinkaMS [17]

Answer: 2.04 s

Explanation:

Let the initial velocity be v, Angle of projectile be

Then the horizontal component = v cos θ = 16 m/s

Vertical component of velocity = v sin θ = 20 m/s

Time taken to reach the highest point is half the time taken for total flight.

Time for total flight,

t = \frac{2vsin \theta}{g}

t'=\frac{vsin \theta}{g} = \frac {20 m/s}{9.8 m/s^2} = 2.04 s

Thus, the football takes 2.04 s to rise to the highest point of its trajectory.

5 0
3 years ago
If i apply 280 n of force to a 40kg object, what will it's acceleration be?
nika2105 [10]

Answer:

f=ma

f=280N

m=40kg

a=?

280=40a

a=280/40

a=70N/kg

6 0
3 years ago
How does seismic waves cause earthquakes?
Allisa [31]

Answer:

Seismic waves cause Earthquakes by shaking the ground aggressively and dangerously. These waves are usually calculated on a seismograph to calculate how hard the earthquake hit that area. A transform Boundary creates the tension when the tectonic plates gets stuck. It stays stuck for a long period of time. Then, at one point, the tectonic plates become unstuck which releases the tension into waves which are called seismic waves. Hope I answered you question.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Assume the population of a large city like New York City is about 4 × 10^6 people, with about 1.97 people per household. Approxi
    13·1 answer
  • Need help please!!!!
    6·2 answers
  • Mechanics: design a decision tree to determine if an object is experiencing an unbalanced force, and using newton's laws of moti
    10·1 answer
  • With a diameter that's 11 times larger than Earth's, _______ is the largest planet.
    13·2 answers
  • Microwaves and infrared waves are similar because they both have
    13·1 answer
  • If the kinetic and potential energy in a system are equal, then the potential energy increases. What happens as a result?
    5·1 answer
  • It took 1700 J of work to stretch a spring from its natural length of 2 m to a length of 6 m. Find the spring constant k.
    6·1 answer
  • Heat naturally flows from an object that has a _______________ temperature to an object that has a _______________ temperature.
    11·2 answers
  • What is the mass of an object which has a force of 600 N acting on it and is travelling
    9·1 answer
  • Can y’all help me with 5 plsssss
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!