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3 years ago

After the collision, car 1 has a final velocity of 6m/s south. What is the final velocity of car2?

Physics

1 answer:

dedylja [7]3 years ago

4 0

I’m almost 100 percent sure it’s the first one

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Where are protons and neutrons found in an atom

mr Goodwill [35]

Answer:

The Nucleus

Explanation:

Protons and Neutrons are found in the nucleus of an atom.

3 0

3 years ago

Read 2 more answers

Kepler-62e is an exoplanet that orbits within the habitable zone around its parent star. The planet has a mass that is 3.57 time

skad [1K]

Answer:

g' = 13.5 m/s²

Explanation:

The acceleration due to gravity on surface of earth is given by the formula:

g = GMe/Re² --------------- euation 1

where,

g = acceleration due to gravity on surface of earth

G = Universal Gravitational Constant

Me = Mass of Earth

Re = Radius of Earth

Now, the the acceleration due to gravity on the surface of Kepler-62e is:

g' = GM'/R'² --------------- euation 1

where,

g' = acceleration due to gravity on surface of Kepler-62e

G = Universal Gravitational Constant

M' = Mass of Kepler-62e = 3.57 Me

R' = Radius of Kepler-62e = 1.61 Re

Therefore,

g' = G(3.57 Me)/(1.61 Re)²

g' = 1.38 GMe/Re²

using equation 1:

g' = 1.38 g

where,

g = 9.8 m/s²

Therefore,

g' = 1.38(9.8 m/s²)

6 0

3 years ago

A child lies on his back and raises his head up off the floor. When doing so, the total tension force in his neck muscles is 51.

Margarita [4]

Answer:

The total tension in the child's neck muscle, T = 56.51 N

Explanation:

Let m = mass of the child's neck

Radius of the curve, r = 2.40 m

The child's speed, v = 3.35 m/s

The tension force on the child's neck when he raises his head up off the floor, $T_{f} = 51.0 N$

The tension force on the child's neck when he raises his head from the wall of the slide, $T_{s} = ?$

$T_{f} = mg\\g = 9.8 m/s^2\\51 = m * 9.8\\m = 51/9.8\\m = 5.2 kg$

Since he makes a circular turn in water, the radial acceleration can be given by the equation:

$a_{r} = \frac{v^{2} }{r} \\a_{r} = \frac{3.35^{2} }{2.4}\\a_{r} = 4.68 m/s^2$

$T_{s} = ma_{r} \\T_{s} = 5.2 * 4.68\\T_{s} = 24.336 N$

The total tension in the child's neck muscle till be calculated as:

$T = \sqrt{T_{f} ^{2} + T_{s} ^{2} } \\T = \sqrt{51 ^{2} + 24.336^{2} }\\T = \sqrt{2601 + 592.24 }\\T = 56.51 N$

5 0

3 years ago

A change to an objects motion is caused by...

andrezito [222]

Answer:

b-unbalanced forces

Explanation:

because the net force then is not a zero

4 0

3 years ago

A 50 kg person steps off a diving platform that is 10 meters above the water below (Olympic height). With what speed do they hit

Nookie1986 [14]

Answer:

14 m/s

Explanation:

The following data were obtained from the question:

Mass = 50 kg

Initial velocity (u) = 0 m/s

Height (h) = 10 m

Acceleration due to gravity (g) = 9.8 m/s²

Final velocity (v) =?

The velocity (v) with which the person hit the water can be obtained as shown below:

v² = u² + 2gh

v² = 0² + (2 × 9.8 × 10)

v² = 0 + 196

v² = 196

Take the square root of both side

v = √196

v = 14 m/s

Therefore, he will hit the water with a speed of 14 m/s

5 0

3 years ago