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
kompoz [17]
2 years ago
5

A go-cart and rider have a mass of 14 kg. If the cart accelerates at 6m/s^2 during a 40 m sprint in 100 seconds, how much power

did the cart do? MUST SHOW ALL WORK!!!!!!!!!
Physics
1 answer:
lara [203]2 years ago
3 0

Answer:

P = 33.6 [N]

Explanation:

To solve this problem we must use Newton's second law, which tells us that the sum of forces on a body is equal to the product of mass by acceleration.

∑F = m*a

where:

F = forces [N]

m = mass = 14 [kg]

a = acceleration = 6 [m/s²]

F = 14*6\\F = 84 [N]

In the second part of this problem we must find the work done, where the work in physics is known as the product of force by distance, it is important to make it clear that force must be applied in the direction of movement.

W = F*d

where:

W = work [J]

F = force = 84 [N]

d = displaciment = 40 [m]

W = 84*40\\W = 3360 [J]

Finally, the power can be calculated by the relationship between the work performed in a given time interval.

P=W/t\\

where:

P = power [W]

W = work = 3360 [J]

t = time = 100 [s]

Now replacing:

P=3360/100\\P=33.6[W]

The power is given in watts

You might be interested in
Can someone tell me what my displacement is?
natulia [17]
60017 is or answer ok you got it
3 0
3 years ago
Ashley is flying a plane that has to reach a gradient of 360m/km in order to take off and not crash. Her goal is to travel from
KengaRu [80]

Answer:

She is likely to crash because her flight gradient is lesser than the flight gradient required gradient to avoid crashing

Explanation:

The given parameters are;

The required gradient of the plane Ashley is flying needs to reach in order to take off and not crash = 360 m/km

The initial elevation of the plane Ashley is flying = Sea level = 0 m

The goal Ashley intends to make = Elevation of 1000 m at 2.8 km. distance

∴ Ashley's goal = Traveling from sea level to 1000 m at 2.8 km horizontal distance

We have;

The gradient  = Rate of change of elevation/(Horizontal distance)

Therefore;

The gradient of Ashley's flight = (1000 - 0)/(2.8 - 0) = 357.143 m/km

The gradient of Ashley's flight ≈ 357.143 m/km which is lesser than the required 360 m/km in order to take off and not crash, therefore, she will crash.

6 0
3 years ago
29. If you traveled to Mars, your mass would be<br> than your mass on Earth. *
marin [14]
Yes it would be the same your weight would change:)
8 0
3 years ago
Read 2 more answers
Jack has two boxes: one is 148g and one is 78g. if jack pushes both boxes with the same amount of force which will accelerate fa
kifflom [539]
1) A The 78g
2) C Push on the wagon in the opposite direction as Jack with a force that is the same as Jack is applying.
5 0
3 years ago
13. Direct instruction takes place when
jekas [21]
A skill set is explicitly taught or an activity is completed
3 0
3 years ago
Other questions:
  • When does DNA replication occur?
    13·2 answers
  • The atomic model that describes an atom as a spherical object containing a certain number of electrons trapped in a mass of posi
    7·2 answers
  • Select the answer choices that describe where plasmas can be found.
    8·2 answers
  • 1. A 59 kg person is in a vehicle travelling at 41 m/s. The vehicle runs into a telephone pole. At impact, it
    10·1 answer
  • Jack is falling down the hill at a speed of 12 m/s. If Jack has a mass of 45 kg, what is his kinetic energy?
    15·1 answer
  • A 1.0μF capacitor with an initial stored energy of 0.50 J is discharged through a 1.0MΩ resistor. (a) What is the initial charge
    11·1 answer
  • Why thermos flask used​
    15·1 answer
  • A scalar is a value that:
    7·1 answer
  • A sledgehammer hits a wall. How do the hammer and the wall act on each other? (1 point)
    12·1 answer
  • are their final velocities necessarily equal? explain. yes, the final velocity is the instantaneous velocity at the moment a spr
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!