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
tresset_1 [31]
3 years ago
9

A car of mass 775 kg traveling at a velocity of 30 m/s in the positive x-direction crashes into the rear of a truck of mass 1,47

5 kg that is at rest and in neutral at an intersection. If the collision is inelastic and the truck moves forward at 11.9 m/s, what is the velocity of the car after the collision? (Indicate the direction with the sign of your answer. Assume the collision is head-on so that the motion of both vehicles remains entirely along the x-direction)
Physics
1 answer:
Thepotemich [5.8K]3 years ago
4 0

Answer:

velocity of the car is 7.3516 m/s

Explanation:

M1v1a + m2v1b = m1v2a + m2v2b

775*30 + 1475*0 = 775*v2a+1475*11.9

Let v2a be x

23250 + 0 = 775x + 17552.5

775x = 23250-17552.5

775x = 5697.5

X = 7.3516 m/s

You might be interested in
Plz help with this paper.
lord [1]

Answer:

1. a) Draw a line towards the right side from the engine

b) This force pushes the boat forward and helps it accelerate further

2. a) Fixed volume for both solid and liquid

Compressible for only solid

Fixed shape is also for only Solid

b) The answer is 'c'

c) Solids, because they have their particles closely packed therefore they can be compressed (not so sure bout this answer)

4 0
3 years ago
A point charge with a charge q1 = 4.00 μC is held stationary at the origin. A second point charge with a charge q2 = -4.10 μC mo
GrogVix [38]

Answer:

W = -0.480 J

Explanation:

given,

q₁ = 4 μC

q₂ = -4.10 μC

W = kq_1q_2(\dfrac{1}{a}+\dfrac{1}{b})

b = \sqrt{(0.27-0)^2+(0.27-0)^2}

b = 0.381

k = 8.99 × 10⁹ Nm²/C²

W = 8.99\times 10^9\times 4\times 10^{-6}\times (-4.1 \times 10^{-6})(\dfrac{1}{0.17}+\dfrac{1}{0.381})

W = [-147.436\times (5.88-2.62)\times 10^{-3}]J

W = -0.480 J

Work done by the electric force W = -0.480 J

4 0
3 years ago
Air that enters the pleural space during inspiration but is unable to exit during expiration creates a condition called a. open
sertanlavr [38]

Answer:

The correct answer is d. tension pneumothorax.

Explanation:

The increasing build-up of air that is in the pleural space is what we call the tension pneumothorax and this happens due to the lung laceration that lets the air to flee inside the pleural space but it does not return.

4 0
3 years ago
A 920 kg cannon fires a 3.5 kg shell at initial acceleration of 95 m/s^2. What is the cannon's recoil force?
Mice21 [21]

Answer:

The cannon recoils with a force of 332.5 N

Explanation:

By Newton's third law Recoil force on cannon = Force in shell.

Force in shell = Mass of shell x Acceleration of shell

Mass of shell = 3.5 kg

Acceleration of shell = 95 m/s²

Force in shell = 3.5 x 95 = 332.5 N

Recoil force on cannon = 332.5 N

So, the cannon recoils with a force of 332.5 N

3 0
3 years ago
If a star is 75 light years away,how long is it before we see the light from that star on Earth ?
Cloud [144]
It will take "Exact 75 years", 'cause light takes 1 year for 1 light years.

Hope this helps!
4 0
3 years ago
Other questions:
  • HELP PLEAASE!!!You push against a steamer trunk with a force of 750 N at an angle of 25° with the horizontal . The trunk is on a
    6·1 answer
  • A 65kg person throws a 0.045kg snowball forward with a ground speed of 30m/s. A second person, with a mass of 60kg, catches the
    9·1 answer
  • What is the current in a 160V circuit if the resistance is 2Ω?
    8·1 answer
  • A man walks 600 m [E47°N], then 500 m [N38°W], then 300 m [W29°S], and finally 400 m [S13°E]. Find his resultant displacement.
    13·1 answer
  • A man weighs 645 N on Earth. What is his mass?
    5·2 answers
  • Groups of organs that work together to complete a process in the body are called:
    11·2 answers
  • About 70-90% of life exists in ťe rainforests in emergency layer true or false
    14·1 answer
  • If the mass of the body is doubled what should be its speed so as to maintain the same kinetic energy ?​
    5·1 answer
  • विद्यार्थी जीवनमा अनुशासनको महत्व essay​
    7·2 answers
  • An electromagnet needs a magnetic metal core. To produce a magnetic field, what else is required?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!