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
I am Lyosha [343]
4 years ago
6

A 2190 kg car moving east at 10.5 m/s collides with a 3220 kg car moving east. The cars stick together and move east as a unit a

fter the collision at a velocity of 4.74 m/s. a) What is the velocity of the 3220 kg car before the collision
Physics
1 answer:
Bezzdna [24]4 years ago
8 0

To solve this problem it is necessary to apply the concepts related to the conservation of the Momentum describing the inelastic collision of two bodies. By definition the collision between the two bodies is given as:

m_1v_1+m_2v_2 = (m_1+m_2)V_f

Where,

m_{1,2}= Mass of each object

v_{1,2}= Initial Velocity of Each object

V_f= Final Velocity

Our values are given as

m_1 = 2190Kg

v_1 =10.5m/s

m_2 = 3220kg

V_f = 4.74m/s

Replacing we have that

m_1v_1+m_2v_2 = (m_1+m_2)V_f

(2190)(10.5)+(3220)v_2 = (2190+3220)(4.74)

v_2 = 0.8224m/s

Therefore the the velocity of the 3220 kg car before the collision was 0.8224m/s

You might be interested in
Is there any other number in the periodic table thats the same as silicon?
barxatty [35]
<span>Astatine same as silicon</span>
8 0
4 years ago
Read 2 more answers
A ___ is awarded to the opposing team when that team violently or dangerously charges a opponent. ( in soccer)
Helen [10]

Answer:

(C)Direct kick

Explanation:

In a game of soccer (foot-ball) there are lots of rules involved in the game and there is penalty for each of the rules violated. Some of the rules include penalty kick, free kick, throw in, goal kick etc.

Free kick is of two types; direct kick and indirect kick.

Direct kick is awarded when a player outside 18 yards box violently or dangerously charges a opponent.

Indirect kick can be awarded when a goalkeeper inside 18 yards box commits certain offenses.

Therefore, the correction option is (C)Direct kick

7 0
3 years ago
How will you include physical fitness in your life?
likoan [24]

Answer:

I get up at 5 in the morning exercise then take a shower then go back to sleep till it's time to eat breakfast and go to school. Then at 7 or 8 o clock pm after i eat dinner at 5 i exercise at 7 then take a shower and then go to bed i do this everyday.

Explanation:

3 0
3 years ago
Read 2 more answers
Describe the seasons on the planet Uranus.
melomori [17]

four seasons, each lasting for about 21 earth years

summer has sun the entire time, while the winter is in full darkness

spring and autumn have a day night cycle

8 0
4 years ago
A helicopter is hovering above the ground. Jim reaches out of the copter (with a safety harness on) at 180 m above the ground. A
vesna_86 [32]

Answer:

The maximum height of the package is 140 m above the ground. Jim Bond will not catch the package.

Explanation:

Hi there!

The equation of height and velocity of the package are the following:

h = h0 + v0 · t + 1/2 · g · t²

v = v0 + g · t

Where:

h = height of the package at time t.

h0 = initial height.

v0 = initial velocity.

t = time.

g = acceleration due to gravity (-9.81 m/s² because we consider the upward direction as positive).

v = velocity of the package at a time t.

First, let´s find the time it takes the package to reach the maximum height. For this, we will use the equation of velocity because we know that at the maximum height, the velocity of the package is zero. So, we have to find the time at which v = 0:

v = v0 + g · t

0 = 50.5 m/s - 9.8 m/s² · t

Solving for t:

-50.5 m/s / -9.81 m/s² = t

t = 5.15 s

Now, let´s find the height that the package reaches in that time using the equation of height. Let´s place the origin of the frame of reference on the ground so that the initial position of the package is 10 m above the ground:

h = h0 + v0 · t + 1/2 · g · t²

h = 10 m + 50.5 m/s · 5.15 s - 1/2 · 9.81 m/s² · (5.15 s)²

h = 140 m

The maximum height of the package is 140 m above the ground. Jim Bond will not catch the package.

6 0
3 years ago
Other questions:
  • A large body collides with a stationary small body from the rear end. How do the bodies behave if the collision is inelastic?.
    7·1 answer
  • The picture below shows the positions of the Earth, Sun, and Moon during an eclipse.
    12·2 answers
  • How is the acceleration of a car traveling on an elevated air track related to the angle of elevation and the height of elevatio
    14·1 answer
  • A CO molecule has an intrinsic dipole moment whose magnitude is 4 X 10^-31 C*m. If the separation between the atoms is 0.11 nm,
    13·1 answer
  • A milliliter of very hot water is added to a liter of very cold water. Which of these events will occur? Assume the surrounding
    12·2 answers
  • The water portion of Earth; one of the traditional subdivisions of Earth’s physical environment
    10·1 answer
  • A plot of land has been surveyed for a new housing development with borders AB, BC, DC, and DA. The plot of land is a right trap
    11·2 answers
  • Which activity performed by a medical professional is primarily based on an understanding of physics?
    10·2 answers
  • (a) Describe a method they could use to find the density of the metal
    9·1 answer
  • A hockey puck is hit with a large force. The puck moves at a high speed as it slides over the ice.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!