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RideAnS [48]
3 years ago
12

Why is the answer B for this problem?

Physics
1 answer:
gayaneshka [121]3 years ago
4 0

Answer:

B

Explanation:

This looks like a momentum question. It also looks like there is no horizontal acceleration.

Momentum before           Momentum after

m1vo                                   (m1 + m2)*vo/3           multiply through by 3

3 m1*vo                               m1* vo + m2*vo          subtract m1*vo from both sides

3m1*vo - m1*vo                   m2*vo

2m1*vo                                 m2*vo                      Divide by vo

2m1 =                                    m2

Conclusion: It takes 2 m1's to equal 1 m2.

B is the answer.

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What is the height of a building that an object is dropped from if it has a mass of 3 kg and hits the ground with a velocity of
Marizza181 [45]

Answer:

125 m

Explanation:

m = 3kg

v = 50m/s

u = 0m/s

a = +g = 10m/s²

s = H = ?

using the formula,

v² = u² + 2as

50² = 0² + 2(10)(H)

2500 = 20H

H = 2500/20

H = 125m

8 0
3 years ago
Convert:<br> 1) 2kg into gram<br> 2) 5200m into km<br> 3) 20cm into m
aivan3 [116]
1) 2 kilograms converted into grams is 2000

2) 5200 meters converted into kilometers is 5.2

3) 20 centimeters converted into meters is 0.2
8 0
3 years ago
Which particles within the atom are electricity charged?
BARSIC [14]

Answer:

I think b sorry if wrong

Explanation:

it b sorry if wrong

5 0
3 years ago
In trying to understand the psychology of addiction, Dr. Jackson focuses on the neurochemical changes that occur, Dr. Fong focus
attashe74 [19]

Answer:

Psychology is theoretically diverse.

Explanation:

The theme, 'Psychology is theoretically diverse' means that the psychology has many various views and points. This is because when people make many observations they can go several and many different ways with these observations. This is why Psychology has many perspectives. The differing perspectives provide complete understanding of the human behavior more effectively.

Hence, different perspectives of the three professionals mentioned illustrate this theme.

8 0
3 years ago
fuel was consumed at a certain rate of 0.05Kg\s in a rocket engine and ejected as a gas with a speed of4000m\s . Determine the t
ivann1987 [24]

Answer:

Thrust = 200 N

Explanation:

The engine thrust can be found by using the following formula:

Thrust = mv

where,

m = mass flow rate of the fuel = 0.05 kg/s

v = velocity of ejected gases = 4000 m/s

Therefore, using the given values in the equation, we get:

Thrust = (0.05\ kg/s)(4000\ m/s)

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5 0
3 years ago
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