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aleksklad [387]
2 years ago
6

Brainliest if correct Question 1 of 10

Physics
1 answer:
Art [367]2 years ago
4 0

Answer:

B

Explanation:

hope this helps you

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A 1400 kg car is traveling east on the highway at 31 m/s and collides into the rear of a slower moving pickup truck of 2400 kg,
zloy xaker [14]

Answer: 31 m/s due east

Explanation: this question can be solved using the law of conservation of linear momentum.

This law states that in a closed or isolated system, during collision, the vector sum of momentum before collision equals the vector sum of momentum after collision.

Momentum = mass × velocity

From our question, our parameters before collision are given below as

Mass of car = mc = 1400kg

Speed of car =vc = 31 m/s (due east)

Mass of truck = mt = 2400kg

Velocity of truck = vt = 25 m/s ( due east )

After collision

Velocity of car = ?

Velocity of truck = 34 m/s ( due east )

Vector sum of momentum before collision is given as

1400 (31) + 2400 (25) = 43400 + 60000 = 103400 kgm/s

After collision the truck is seen to move faster (v = 34 m/s) which implies that the car also moves due east .

1400 (v) + 2400(25) .... A positive value is between both momenta because they are in the same direction.

After collision, we have that

1400v + 60000

Vector sum of momentum before collision = vector sum of momentum after collision

103400 = 1400v + 60000

103400 - 60000 = 1400v

43400 = 1400v

v = 43400/ 1400

v = 31 m/s due east

4 0
3 years ago
The mass of a truck with its cargo is 1800 kg. The truck is coasting to the right with a speed of 10 m/s. As it coasts its cargo
OverLord2011 [107]

Here we apply conservation of linear momentum. The momentum of the truck with cargo and without cargo remains constant. That is,

mv=m'v'.

Here m,v are initial mass and velocity. m',v' are final mass and velocity. Here m=1800,v=10 and m'=1800-300=1500.

The velocity of the truck be after its cargo is taken off is

v'=\frac{mv}{m'} \\  v'=\frac{1800*10}{1500} \\  v'=12 m/s

6 0
3 years ago
Read 2 more answers
What is the degree of overall satisfication a person gets from life called?​
Alexus [3.1K]

Answer:

I remember learning about this in health class. I believe the answer is quality of life.

Explanation:

5 0
3 years ago
What is the amount of thermal energy that can be stored in an object depends on?
77julia77 [94]
Thermal energy is the total energy of all the molecules in an object. The thermal energy of an object depends on three things: 4 the number of molecules in the object 4 the temperature of the object (average molecular motion) 4 the arrangement of the object's molecules (states of matter).

Hope this helps
3 0
3 years ago
In a single-slit diffraction experiment, the slit is 0.1mm wide and is illuminatedby monochromatic light with a wavelength of 50
dem82 [27]

Answer:

0.1 m

Explanation:

d = slit width = 0.1 mm = 0.1 x 10⁻³ m

\lambda = wavelength of monochromatic light = 500 nm = 500 x 10⁻⁹ m

D = Distance of the screen = 10 m

w = Spacing between successive minima

Spacing between successive minima is given as

w = \frac{2D\lambda }{d}

Inserting the values given

w = \frac{2(10)(500\times10^{-9}) }{0.1\times10^{-3}}

w = 0.1 m

4 0
3 years ago
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