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
nasty-shy [4]
3 years ago
15

An initially motionless test car is accelerated uniformly to 120 km/h in 8.28 s before striking a simulated deer. The car is in

contact with the faux fawn for 0.815 s, after which the car is measured to be traveling at 71.0 km/h. What is the magnitude of the acceleration of the car before the collision
Physics
1 answer:
Anestetic [448]3 years ago
4 0

Answer:

The value is   a =  4.0 \ m/s^2

Explanation:

From the question we are told that  

  The velocity  is  a =  120 \  km/h =  [tex]\frac{120 *  1000}{3600} =  33.3 \  m/s[/tex]

  The time taken is t  =  8.28 \  s

    The  time taken for contact is  t_c  =  0.815 \  s

     The  velocity of the of the car after contact is v_c =  71.0 \  km/h = [tex]\frac{71 *1000}{3600} =  19.7 2 \  m/s[/tex]

From the equation of kinematics we have that  

       v =  u  + at

Here   u =  0 \ m/s  since the car is initially motionless

=>    33.3 =  0  + a *  8.28

=>    a =  4.0 \ m/s^2

You might be interested in
An axe used to split wood is driven into a piece of wood for an input distance of 0.03. If the mechanical advantage of the axe i
9966 [12]

Answer:

.9 im guessing

Explanation:

6 0
3 years ago
2. How could you tell if the powder was salt, sugar, flour, or baking soda
m_a_m_a [10]
By looking at each ones texture. and maybe even color
3 0
3 years ago
A 750 kg car is moving at 20.0 m/s at a height of 5.0 m above the bottom of a hill when it runs out of gas. From there, the car
S_A_V [24]

Answer:

Explanation:

Kinetic energy at the height = 1/2 m v²

= 1/2 x 750 x 20²

= 150000 J

Its potential energy = mgh

= 750 x 9.8 x 5

=36750 J

Total energy = 186750 J

Its total kinetic energy will be equal to 186750 J , according to conservation of mechanical energy

If v be its velocity at the bottom

1/2 m v² = 186750

v = √498

= 22.31 m /s

5 0
3 years ago
Elizabeth had heart surgery to repair the pacemaker of her heart. Into which structure did the surgeon need access?
blsea [12.9K]

Answer:

SA Node is where the surgeon needed access

4 0
3 years ago
Consider the reaction X mc022-1.jpg Y + 2Z . If the molar solubility of X is multiplied by 2, the value of Ksp will be multiplie
Alex777 [14]
X -> Y + 2Z

So there are 2 different particles. 1 mol of X produces 1 mol of Y and 2 moles of Z.

Kps = [Y] [Z]^2

We will call “s” (solubility) the molarity of X

So the molarity of Y+ is also “s” (same number)

And the molarity of Z is “2s” (twice as much)

Kps = s*(2s)^2 = s*4s^2=4s^3

If s is multiplied by 2:

Kps = 4*(2s)^3=4*2^3*s^3=4*8*s^3

So Kps is multiplied by 8.

4 0
4 years ago
Other questions:
  • A piano, violin, or guitar uses the resonance of a wooden soundboard to
    10·2 answers
  • As police car with a blaring siren driver away from you while are on standing near intersection, the frequency of the siren is _
    13·1 answer
  • At what speed v will the length of a 1.00 m stick look 13.7 % shorter (86.3 cm )
    11·1 answer
  • A boulder with a weight of 780 N is resting at the edge of a cliff that rises 123 m above the ground. What is the gravitational
    9·1 answer
  • In a population of seals, most of the seals have similar coloring. However, one seal has albinism. This seal is white and is alm
    5·2 answers
  • Heat is transferred in a gas through _____.
    8·2 answers
  • The amount of heat per second conducted from the blood capillaries beneath the skin to the surface is 240 J/s. The energy is tra
    9·1 answer
  • You pull a sled with a package on it across a snow-covered flat lawn. If you
    13·2 answers
  • Republicans are called the Liberal Party while the Democrats are called Conservative Party.
    7·2 answers
  • Four measurements of the file card's width are made. Of the measurements given below, the LEAST precise.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!