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
liberstina [14]
3 years ago
12

Two cars (with masses 2000 kg and 1000 kg) collide head on an icy road. Before the collision, the more massive vehicle was movin

g at 10 m/s to the right and the less massive vehicle was moving at 15 m/s to the left. Immediately after the collision, the more massive vehicle was moving at 7.0 m/s to the left. How fast was the less massive Vehicle immediately after the collision?
Physics
1 answer:
mezya [45]3 years ago
5 0

Answer:

v₂' = 19 m/s

Explanation:

given,                    

mass of car one = m₁ = 2000 Kg

mass of car two = m₂ = 1000 Kg

velocity of car one in right (v₁) = 10 m/s

velocity of car two in left (v₂)= 15 m/s

after collision                        

velocity(v₁') = 7 m/s

v₂' = ?                            

using conservation of momentum

m₁v₁ + m₂v₂ = m₁v₁' + m₂v₂'

m₁v₁ + m₂v₂ = m₁v₁' + m₂v₂'

2000 x 10 - 1000 x 15 = - 2000 x 7 + 1000 v₂'

1000 v₂' = 19000

v₂' = 19 m/s

You might be interested in
The mass of the particles that a river can transport is proportional to the sixth power of the speed of the river. A certain riv
kow [346]

Answer:

1.122 m/s

Explanation:

So usually a river with a speed of 1 meters per second can transport particle that weighs:

1^6 = 1 kg

If the particle is twice as massive as usual, then its weights would be 1 * 2 = 2kg

This means the river must be flowing at a speed of

2^{\frac{1}{6}} = 1.122 m/s

5 0
3 years ago
Name three variables that affect a life system
sweet-ann [11.9K]
Three things that effect a life system would be
- sunlight
-water
-energy/food

Hope this helps
7 0
3 years ago
Read 2 more answers
Question 9:<br> All parts thank you !
WINSTONCH [101]
Photo Math is the answer
5 0
3 years ago
Points A, B, and C form the vertices of a triangle in a nonuniform electrostatic field. The electrostatic work done on a particl
Trava [24]

Answer:

Explanation:

Let electric potential at A ,B and C be Va , Vb and Vc respectively.

Work done = charge x potential difference

Wab = q ( Va - Vb )

Wac =  q (  Va -  Vc )

Given

Wac = - Wab / 3

3Wac = - Wab

Now

Wbc = q ( Vb - Vc )

= q [ ( Va-Vc ) - ( Va - Vb )]  

= Wac - Wab

= Wac + 3Wac

= 4Wac

4 0
3 years ago
6. A satellite is orbiting Earth just above its surface. The centripetal force making the satellite follow a circular trajectory
Svetllana [295]

Answer:

Engular velocity: w=1,24*10^{-3}/s

Linear velocity: V=7905 m/s

The time it takes:

t=5060s=84min

Explanation:

The magnitude of the centripetal acceleration can be related to the angular velocity and radius as:

(1)a=r*w^{2}

Solving for w:

(2)w=\sqrt{\frac{a}{r} }

Replacing a=9,8m/s2 and r=6,375,000m:

(3)w=\sqrt{\frac{9,8m/s^{2}}{6375000m} }=1,24*10^{-3}/s

And the angular velocity relates to the linear velocity:

V=w*r=1,24*10^{-3}/s*6375000m=7905 m/s

The perimeter of the orbit is:

P=\pi *2*r=\pi *2*6375000m=40.05*10^{6}m

The time it takes:

t=\frac{P}{V} =\frac{40.05*10^{6}m}{7905 m/s}=5060s=84min

5 0
3 years ago
Other questions:
  • Determine how potential and kinetic energy changes at each position of the pendulum as the ball swings from A to E. Position A:
    10·2 answers
  • What is the lowest temperature that a substance can reach
    14·2 answers
  • A car moving at 11.6 m/s begins to accelerate at 5.22 m/s/s and reaches a final velocity of 31.5 m/s. How far did it travel duri
    12·1 answer
  • Which of the following is not an example of centripetal acceleration?
    7·1 answer
  • True or false The sound of a police siren would be an example of the Doppler effect
    13·1 answer
  • An artery with cross sectional area of 1 cm2 branches into 20 smaller arteries each with 0.5 cm2 cross sectional area. If the ve
    6·1 answer
  • The two parents shown in (Figure 1) exert upward forces
    12·1 answer
  • A 3m beam of negligible weight is balancing in equilibrium with a fulcrum placed 1m from its left end. If a force of 50N is appl
    5·1 answer
  • Meghan and Kailey are attempting to push a piano down the hallway, but as they turn up the 8thgrade hallway they are faced with
    9·2 answers
  • 2. a) If a bottle was filled with a liquid, tightly
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!