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Tamiku [17]
3 years ago
7

Two spacemen are floating together with zero speed in a gravity-free region of space. The mass of spaceman A is 120 kg and that

of spaceman B is 90 kg. Spaceman A pushes B away from him with B attaining a final speed of 0.5 m/s. The final recoil speed of A is:
A) zero
B) 0.38 m/s
C) 0.5 m/s
D) 0.67 m/s
E) 1.0 m/s
Physics
1 answer:
maw [93]3 years ago
4 0

Answer:

your answer is A

Explanation:

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nikdorinn [45]

Answer:

E = 55.9583\ Volts/meter

Explanation:

First let's find the electric potential using y = 22.5:

V(y) = 1.69y^2 +15.6y+52.5

V(22.5) = 1.69(22.5)^2 + 15.6*22.5 + 52.5

V(22.5) = 1259.0625\ Volts

Then, to find the magnitude of the electric field, we just need to divide the electric potential by the distance y:

E = V/d

E = 1259.0625/22.5

E = 55.9583\ Volts/meter

3 0
3 years ago
For a particle undergoing free-fall acceleration, the acceleration vs. time graph is
Sergeeva-Olga [200]
A straight line of y = 9.8
5 0
4 years ago
A 36,287 kg truck has a momentum of 907,175 kg • . What is the truck’s velocity
yuradex [85]

Momentum = (mass) x (speed) .

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Divide each side by (36,287 kg):

Speed = (907,175 kg-m/s) / (36,287 kg)

<em>Speed = 25 m/s</em>

That's the truck's <em>speed</em>. We can't do anything that involves the truck's <em>velocity,</em> because we don't know what direction the truck is moving.  

4 0
4 years ago
Read 2 more answers
An object starts from rest at the origin (x0 = 0) and travels in a straight line with a constant acceleration (a = constant). Su
agasfer [191]

Answer:

a=(6.8)\ m/s^2

Explanation:

Given that,

An object starts from rest at the origin (x₀ = 0) and travels in a straight line with a constant acceleration (a = constant).

The relation between the position (x) and time (t) is given by :

x=(3.4t^2)\ m/s^2

Let v is the velocity of the object.

v=\dfrac{dx}{dt}

v=\dfrac{d(3.4t^2)}{dt}

v=(6.8t)\ m/s

Let a is the acceleration of the object. It is given by :

a=\dfrac{dv}{dt}

a=\dfrac{d(6.8t)}{dt}

a=(6.8)\ m/s^2

So, the acceleration of the object is (6.8)\ m/s^2. Hence, this is the required solution.

4 0
3 years ago
Calculate the kinetic energy of a 1 kg object moving at 4.5 ms. Round to the first decimal.
harina [27]

Answer:

91.21

Explanation:

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3 years ago
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