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
aleksley [76]
3 years ago
10

At a race track, a car of mass 1150 kg crashes into a concrete wall at a speed of 85 m/s a. If the car comes to a stop when it h

its the wall, what the magnitude of the impulse applied to the car? The car crashed into the wall, stopping in 0.1 seconds. What force is applied to the car?
Physics
1 answer:
lukranit [14]3 years ago
5 0

Answer:

Explanation:

This is a momentum / impulse question.   Δp = F•(Δt)

The momentum of the car goes from 1150*85 = 97750 to 0 in 0.1 seconds.

From this we get the equation 97750 = F(.1)

 a)   F = 977500 N

For part b), the change in momentum is unchanged, so we must increase the time in order to decrease the force.

97750 = 200000(t)

b)       t = 0.49 s  or .5 s considering sig figs which means an increase factor of 5

You might be interested in
Which group of animals would be served best by the following adaptations?
aev [14]
The answer to this question would be: <span>A) animals that live in deserts 

</span>Desert temperature is high, especially in the day, <span>An animal that lives in the desert needs to adapt to the high temperature either by reducing the heat or by increasing heat loss. By becoming nocturnal, the animal also able to evade the sunlight so it was less exposed to the heat. 
Unlike other option, the desert is lacking water. Desert is mostly dry and water would be a resource that hard to find. In this case, k</span><span>idneys adapted to check water loss would be a great help</span>
5 0
3 years ago
Read 2 more answers
A toaster uses 6700 joules of energy in 45 seconds to toast to a piece of bread what is power of the oven
just olya [345]
P= w/t and W= Work 
In this case, W= 6,700j, and T= 45 seconds
Power is the ratio of work  per unit time. When you perform a work in a given span of time, the ratio of work performed with respect to time is Called Power. 
si unit for Power is Watt (W) 
so, P= 6,700/45
P= 148 
Final answer is P=148
8 0
3 years ago
An oil film with refractive index 1.48 and thickness 290 nm is floating on water and illuminated with white light at normal inci
VikaD [51]

Answer:

572.3 nm

Explanation:

n_{oil} = refractive index of the oil film = 1.48

t_{oil} = thickness of the oil film = 290 nm

\lambda = wavelength of the dominant color

m = order

Using the equation

2 n_{oil} t_{oil} = (m + 0.5) \lambda

For m = 0

2 (1.48) (290) = (0 + 0.5) \lambda

\lambda = 1716.8 nm

For m = 1

2 (1.48) (290) = (1 + 0.5) \lambda

\lambda = 572.3 nm

For m = 2

2 (1.48) (290) = (2 + 0.5) \lambda

\lambda = 343.4 nm

Hence the dominant color wavelength is 572.3 nm

8 0
3 years ago
What creates an ionic bond?
natta225 [31]
Ionic bonding is the bonding between a positive metal with a negative nonmetal (metals are always positive while non metals are opposite). The meeting of a metal with a non metal creates an ionic bond.
6 0
3 years ago
Read 2 more answers
What two energies does a bulldozer use​
sesenic [268]
Mechanical and electrical
3 0
2 years ago
Other questions:
  • If the world was not tilted, what would happen to the people living on Earth
    10·2 answers
  • You have a spring with k = 640 N/m connected to a mass with m = 10 kg. You start the system oscillating and measure the velocity
    12·1 answer
  • Consider a 10 gram sample of a liquid with specific heat 2 J/gK. By the addition of 400 J, the liquid increases its temperature
    6·1 answer
  • Dr. Eriksson is working on a material called selenium. She is adding a certain number and type of atoms to the selenium, which w
    11·2 answers
  • What is the magnitude (in N/C) and direction of an electric field that exerts a 3.50 ✕ 10−5 N upward force on a −1.55 µC charge?
    15·1 answer
  • What is the first law of gravity??
    12·1 answer
  • If a body of mass 2 kg is moving with a velocity of 30 m/s, then
    10·1 answer
  • Gravitational potential energy is due to....
    7·1 answer
  • A 0.208 kg particle with an initial velocity of 1.26 m/s is accelerated by a constant force of 0.766 N over a distance of 0.195
    10·1 answer
  • A rocket is launched straight up with constant acceleration. Four seconds after liftoff, a bolt falls off the side of the rocket
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!