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Vika [28.1K]
3 years ago
15

The gravity on Earth has been calculated to be __.

Physics
2 answers:
tia_tia [17]3 years ago
6 0

Answer: 9.8m/s^2

Slav-nsk [51]3 years ago
5 0

9.81 meters per second squared

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1. There is a famous intersection in Kuala Lumpur, Malaysia, where thousands of vehicles pass each hour. A 750 kg Tesla Model S
tigry1 [53]

Solution :

Let the positive x-axis is along the East and the positive y direction is along the north.

Given :

Mass of the Tesla car, m_1 = 750 \ kg

Mass of the Ford car, m_2 = 1250 \ kg

Now let the initial velocity of Tesla car in the south direction be = -v_1j

The initial momentum of Tesla car, p_1 = -750 \ v_1

Let the initial velocity of Ford car in the east direction be = v_2 \ i

So the initial momentum of the Ford car is p_2=1250\ v_2 \ i

Therefore, the initial velocity of both the cars is p_i = p_1+p_2

                                                                  =1250 \ v_2 \ i - 750\ v_1 \ j

Now the final velocity of both the cars is v = 18 \ m/s

So the vector form is :

v = 18\cos 32\ i-18 \sin 32 \ j

  = 15.26 \ i - 9.54 \ j

Therefore the momentum after the accident is

p_f=(m_1+m_2) \times v

    =(750+1250) \times (15.26 \ i - 9.54 \ j)

    = 30520\ i -19080\ j

According to the law of conservation of momentum, we know

p_i = p_f

1250 \ v_2 \ i - 750\ v_1 \ j  = 30520\ i -19080\ j

1250 \ v_2 = 30520

v_2=24.4 \ m/s

From, 750\ v_1 = 19080

We get, v_1=25.4 \ m/s

Therefore the speed of Tesla car before collision = 25.4 m/s

The speed of ford car before collision = 24.4 m/s

6 0
3 years ago
A solar oven can be created by focusing the sun's rays to a point using a _________ mirror.
drek231 [11]
Concave mirror...as it focus the light at a given point..... concave mirror is converging !!!
7 0
3 years ago
Transform active margins are associated with which type of boundary? Convergent Transform Divergent
SSSSS [86.1K]

Answer:

Transform active margins are associated with which type of boundary?

Transform boundary

Explanation:

The transform boundary is a boundary where one plates(crust) slides past another plate horizontally. This kind of plate movement have been detected to exist between the interaction of the North pacific plates(continental plate) and the pacific plates(oceanic plates) .

At the transform margin the crust are usually broken. But overall crust are neither created nor destroyed . The transform margin region are active as it is marked by shallow-focus earthquakes .

Along the fractured zone where this transform movement occurs is known to create extensive transform faults .Notable transform fault that exist in this kind of boundary(transform) is the San Andrea fault and Alpine Fault.  

The motion of this plates can occur on a single fault or on a group of faults.

5 0
4 years ago
You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 35 m/s. The ball has __________________
Elden [556K]

Answer:

The ball has kinetic energy

the kinetic energy is 945 J

Explanation:

4 0
3 years ago
Read 2 more answers
answers Collision derivation problem. If the car has a mass of 0.2 kg, the ratio of height to width of the ramp is 12/75, the in
Natasha2012 [34]

Answer:

4.8967m

Explanation:

Given the following data;

M = 0.2kg

∆p = 0.58kgm/s

S(i) = 2.25m

Ratio h/w = 12/75

Firstly, we use conservation of momentum to find the velocity

Therefore, ∆p = MV

0.58kgm/s = 0.2V

V = 0.58/2

V = 2.9m/s

Then, we can use the conservation of energy to solve for maximum height the car can go

E(i) = E(f)

1/2mV² = mgh

Mass cancels out

1/2V² = gh

h = 1/2V²/g = V²/2g

h = (2.9)²/2(9.8)

h = 8.41/19.6 = 0.429m

Since we have gotten the heigh, the next thing is to solve for actual slant of the ramp and initial displacement using similar triangles.

h/w = 0.429/x

X = 0.429×75/12

X = 2.6815

Therefore, by Pythagoreans rule

S(ramp) = √2.68125²+0.429²

S(ramp) = 2.64671

Finally, S(t) = S(ramp) + S(i)

= 2.64671+2.25

= 4.8967m

3 0
3 years ago
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