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
borishaifa [10]
2 years ago
15

a railway truck of mass 8000 kg travels along a level track at a velocity of 2.5 m s–1 and collides with a stationary truck of m

ass 12 000 kg. the collision takes 4.0 s and the two trucks move together at the same velocity after the collision. what is the average force that acts on the 8000 kg truck during the collision?
Physics
1 answer:
krek1111 [17]2 years ago
4 0

The average force that acts on the 8000 kg truck during the collision is 12000kgm/s.

Impulse is the change in momentum of the body.

Mass, M = 8000kg

Time, t = 4s

Mass, m = 12000kg

Velocity, V = 2.5m/s

Let the Final velocity be v.

Using conservation of momentum to find out the final velocity of the truck,

MV = (M+m)v

8000×2.5 = (8000+12000)×v

v = 1m/s

Now the Initial momentum is MV = 8000×2.5 = 20000kgm/s

Final Momentum is Mv = 8000×1 = 8000kgm/s

Change in Momentum = 20000 - 8000

Change is Momentum = 12000kgm/s

Change is momentum is equal to the average force that acts on the truck from the Newton law of motion.

Hence, the average force that acts on the 8000 kg truck during the collision is 12000kgm/s.

Learn more about Impulse here, brainly.com/question/16980676

#SPJ4

You might be interested in
In moving out of a dormitory at the end of the semester, a student does 1.20 x 104 J of work. In the process, his internal energ
Zielflug [23.3K]

Answer:

(a) W=1.20×10⁴J

(b) U= -5.46×10⁴J

(c) Q= -4.26×10⁴J

Explanation:

Given that student does 1.20×10⁴J work

(a) W=1.20×10⁴J

Work done by student,so positive sign

During the process, his internal energy decreases by 5.46×10⁴J.

(b) U= -5.46×10⁴J.

As the Energy decreases therefore negative sign

For (c) Q

We know the formula

Q=W+U\\Q=1.2*10^{4}+(-5.46*10^{4} )\\ Q=-4.26*10^{4}J

8 0
3 years ago
Explain, briefly, what the electrical field inside a microwave oven does to heat food.
yarga [219]

Answer:

Inside the strong metal box, there is a microwave generator called a magnetron. When you start cooking, the magnetron takes electricity from the power outlet and converts it into high-powered, 12cm (4.7 inch) radio waves. Thus the microwaves pass their energy onto the molecules in the food, rapidly heating it up.May 3, 2018

5 0
3 years ago
A projectile is launched at an angle of 29 degrees above the horizontal with an initial velocity of 36.6 at an unknown height.
fgiga [73]

The vertical velocity of the projectile upon returning to its original is 17. 74 m/s

<h3>How to determine the vertical velocity</h3>

Using the formula:

Vertical velocity component , Vy = V * sin(α)

Where

V = initial velocity = 36. 6 m/s

α = angle of projectile = 29°

Substitute into the formula

Vy = 36. 6 * sin ( 29°)

Vy = 36. 6 * 0. 4848

Vy = 17. 74 m/s

Thus, the vertical velocity of the projectile upon returning to its original is 17. 74 m/s

Learn more about vertical velocity here:

brainly.com/question/24949996

#SPJ1

8 0
2 years ago
A student constructed a series circuit consisting of a 12.0-volt battery, a 10.0-ohm lamp, and a
Stels [109]
The power dissipated across a component can be calculated through the formula P=I^2xR

Substituting the values in we get P=(0.5)^2x10=2.5W
4 0
3 years ago
List the 3 types of collisions that occur when your vehicle hits an object.
koban [17]

These collisions are: "a Vehicle Collision, a Human Collision, Internal Collision." A vehicle collision is a collision that involves two or more vehicles and is when the vehicles collide against each other creating a unbalanced force since how the force comes from opposite directions. A human collision would involve a vehicle and a human which would also be a unbalanced force but the human wouldn't have much affect of it's speed. A internal collision is when something happens inside the vehicle which decreases, or increases the vehicles speed.

Hope this helps!

7 0
3 years ago
Other questions:
  • Visible light is a range of _____ energy EM waves in the electromagnetic spectrum that the human eye can see. A. zero B. high C.
    15·2 answers
  • A ball rolls from x = - 5m to x = 0m in 1 second . What was its average velocity? (Units = m/s) Don't forget: velocities and dis
    7·1 answer
  • explain why a high speed collision between two cars would cause more damage than a low speed collision between the same two cars
    8·1 answer
  • What do (3.9 x 10^2)(4.1 x 10^4) equal
    13·1 answer
  • Which of the following correctly describes the result of a voltage difference?
    13·2 answers
  • The current in a long solenoid of radius 4 cm and 19 turns/cm is varied with time at a rate of 8 A/s. A circular loop of wire of
    10·1 answer
  • A boy rolls a toy car across a floor with a velocity of 3.21 m/s. How long does it take the car to travel a distance of 4.50 m?
    12·1 answer
  • Helpppp plzzzzz for 20 points
    6·1 answer
  • Someone please help me...
    8·1 answer
  • Explain how horizontal motion can be uniform while vertical motion is accelerated.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!