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kenny6666 [7]
3 years ago
8

In a closed system, glider A with a mass of 0.40 kg and a speed of 2.00 m/s collides with glider B at rest with a mass of 1.20 k

g. The two interlock and move off. What speed are they moving at?
Physics
1 answer:
USPshnik [31]3 years ago
4 0
Conservation of momentum.
m1*u1 + m2*u2 =m1*v1 + m2*v2
here u2=0 body at rest, v1=v2=v both interlock and move together
0..4*2+1.2*0 = 0.4*v+1.2*v
v= 0.8/1.6 = 0.5 m/sec
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Answer:

3.13 m/s

Explanation:

From the question,

Since the flea spring started from rest,

Ek = W................... Equation 1

Where Ek = Kinetic Energy of the flea spring, W = work done on the flea spring.

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substitute equation 2 into equation 1

1/2mv² = W.................... Equation 3

make v the subject of the equation

v = √(2W/m)................. Equation 4

Given: W = 3.6×10⁻⁴ J, m = 2.3×10⁻⁴ kg

Substitute into equation 4

v = √[2×3.6×10⁻⁴ )/2.3×10⁻⁴]

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4 0
3 years ago
In a simple electric circuit, a 110-volt electric heater
Readme [11.4K]

Answer: 55 ohms

Explanation:

Given that,

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Since voltage, current and resistance are involved, apply the formula for ohms law.

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r = 110 volts / 2.0 A

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Thus, the resistance of the heater is 55 ohms

6 0
3 years ago
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Mrac [35]

Answer: Igneous rock , formed by the cooling of magma (molten rock) inside the Earth or on the surface. Sedimentary rocks, formed from the products of weathering by cementation or precipitation on the Earth's surface. Metamorphic rocks, formed by temperature and pressure changes inside the Earth.

Explanation:

3 0
2 years ago
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valina [46]
The speed of water can be split into vertical and horizontal speed components:
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To find when the water hits the ground 2.5m away, set y= 0 and x = 2.5
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Answer:

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Explanation:

The weight of an object is defined as the product of the mass of the object with the acceleration due to gravity of the Planet.

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m = mass of the object

g = acceleration due to gravity on the planet

The mass of an object remains constant everywhere in the universe. Therefore, the weight is directly proportional to the value of acceleration due to gravity.

The value of acceleration due to gravity on the Moon is lesser than its value on the Earth.

<u>Hence, the weight of the object decreases when it is taken from the Earth to the Moon </u>

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3 years ago
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