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NISA [10]
3 years ago
7

A 30-g car rolls from a hill 12 cm high and is traveling at 154 cm/s as it travels along a 275 cm horizontal track. What is the

momentum of the car?
Physics
1 answer:
Bond [772]3 years ago
8 0
Momentum of the car is 46.2 kgm/s
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In which orbitals would the valence electrons for selenium (Se) be placed?
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s orbital and p orbital

hope this helps :)

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What's the difference between the speed and velocity of an object?
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Answer:

C

Explanation:

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3 0
2 years ago
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Sladkaya [172]
I'm pretty sure the answer is A. 0.5. Sorry if i'm wrong.
6 0
4 years ago
What is the kinetic energy of a 400kg house that is racing around a track at 17 meters per second?
nasty-shy [4]

Kinetic energy = (1/2) (mass) (speed squared)

Kinetic energy = (1/2) (400 kg) (17 m/s)²

Kinetic energy = (1/2) (400 kg) (289 m²/s²)

<em>Kinetic energy = 57,800 Joules</em>

<em></em>

(That's some amazing house.  I'd like to be there to see it.)

5 0
3 years ago
The Earth's escape speed (the speed you need to get away forever) is about 40,000 kilometers per hour. Escape speed depends on t
Anvisha [2.4K]

The Moon s escape speed will be smaller than Earth's.

  • What is escape speed:

The minimum speed that is required for an object to free itself from the gravitational force exerted by a massive object.

The formula of escape speed is

  • v = \sqrt{\frac{2GM}{R} }

where

v is escape velocity

G is universal gravitational constant

M is mass of the body to be escaped from

r is distance from the center of the mass

we can say that,

Escape speed depends on the gravity of the object trying to hold the spacecraft from escaping.

we know that,

The Moon's surface gravity is about 1/6th as powerful or about 1.6 meters per second per second.

since, v ∝ g

The Moon s escape speed will be smaller than Earth's.

Learn more about escape speed here:

<u>brainly.com/question/15318861</u>

#SPJ4

5 0
2 years ago
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