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Reika [66]
2 years ago
6

In a collision, a car of mass 1000kg travelling at 24m/s comes to rest in 1.2s calculate

Physics
1 answer:
kompoz [17]2 years ago
8 0

Answer:

a. 24,000

b. -20,000 N

Explanation:

a. p = m•v

1,000•24 = 24,000

1,000•0 = 0

∆p = 24,000

b. F = m•a

a = ∆v/∆t

a = -24/1.2

a = -20 m/s²

F = 1,000•(-20)

F = -20,000

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In a very busy off-campus eatery one chef sends a 201 g broccoli-tomato-pickle-onion-mushroom pizza sliding down the counter fro
Murrr4er [49]

Answer:

The correct answer is:

(A) to the left

(B) at speed -0.8725 m/s

Explanation:

The given values are:

Plate 1:

Mass,

m₁ = 201 g

Velocity,

v₁ = +1.79 m/s

Plate 2:

Mass,

m₁ = 335 g

Velocity,

v₁ = -2.47 m/s

According to the conservation of momentum, we get

⇒  m_1v_1+m_2v_2=(m_1+m_2)v

then,

⇒  v=\frac{m_1v_1+m_2v_2}{m_1+m_2}

On substituting the values, we get

⇒     =\frac{201\times 1.79+335\times (-2.47)}{201+335}

⇒     =\frac{359.79-827.45}{536}

⇒     =\frac{-467.66}{536}

⇒     =-0.8725 (to the left)

3 0
2 years ago
3. If you wanted the athletic shoe to slide faster on a surface, what might you do to the shoe? Provide at least two ways to mak
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Also, if you make the sole smoother the shoe the friction coefficient would decrease and, again, the show would slide mor easily.
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3 years ago
The temperature in degrees Celsius (C) can be converted to degrees Fahrenheit (F) using the formula F(C)= 9 5 C k, where k is a
Lyrx [107]

The value of the constant K in the temperature equation is 32.

The given parameters:

  • F (C) = \frac{9}{5} C \ + K
  • 40⁰C corresponds to 104 ⁰F

The value of K for which the value of the temperature at 40 degrees Celsius corresponds to 104 degrees Fahrenheit is calculated as follows;

F(C) = \frac{9}{5} C \ + \ K \\\\104 = \frac{9}{5} (40) \ + \ K\\\\104 = 72 \ + \ K\\\\104 - 72 = K\\\\32 = K

Thus, the value of the constant K in the temperature equation is 32.

Learn more about temperature conversion here: brainly.com/question/17408526

5 0
2 years ago
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