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vredina [299]
3 years ago
11

A cat leaps to catch a bird. If the cat's jump was at 60.0° off the ground and its initial velocity was point of its trajectory?

0.30 m 3.44 m/s, what is the highest O 13.76 m 0.45 m 0.90 m
Physics
1 answer:
iren2701 [21]3 years ago
5 0

Answer:

The highest of its trajectory = 0.45 m

Option C is the correct answer.

Explanation:

Considering vertical motion of cat:-

Initial velocity, u =  3.44 sin60 = 2.98 m/s

Acceleration , a = -9.81 m/s²

Final velocity, v = 0 m/s

We have equation of motion v² = u² + 2as

Substituting

   v² = u² + 2as

    0² = 2.98² + 2 x -9.81 x s

    s = 0.45 m

The highest of its trajectory = 0.45 m

Option C is the correct answer.

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How much heat is required to raise 100 grams of water (c= 4.18) by 5 degrees Celsius?
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Answer:

Heat capacity, Q = 2090 Joules.

Explanation:

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A block moving to the right on a level surface with friction is pulled by an increasing horizontal force also directed to the ri
KengaRu [80]

Answer:

e) True  Yes both are constant

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The equation for the force of friction is

     fr = μ N

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d.) False

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6 0
3 years ago
A concrete column has a diameter of 380 mm and a length of 2.6 m . if the density (mass/volume) of concrete is 2.45 mg/m3, deter
grigory [225]

The volume of the column is

(π) · (r²) · (length) =

(π) · (0.19 meter)² · (2.6 meters) =

(π) · (0.036 m²) · (2.6 m) =

0.294 m³ .

The density is 2,450 kg/m³ (VERY very dense, heavy concrete)

so the weight of the column is (mass)·(gravity) or

(density) · (volume) · (gravity) =

(2,450 kg/m³) · (0.294 m³) · (9.81 m/s²) =

(2,450 · 0.294 · 9.81) (kg · m³· m) / (m³ · s²) =

7,066 kg-m/s² = 7,066 Newtons .

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5 0
3 years ago
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