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bulgar [2K]
3 years ago
10

Simplify -2/3 - 3/5 A) -1/15 B) -19/15 C) -3/5 D) -5/8

Physics
1 answer:
Leto [7]3 years ago
7 0
I got B,when you subtract 3/5 from NEGATIVE 2/3 it creates a negative 19 over a positive 15.

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Which is one-dimensional
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Answer:

B

Explanation:

They are all one-dimensional

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Prove that s=ut+½at²​
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Explanation:

Distance travelled = Area under the line

= ut + ½ (v-u)t

Acceleration (a) = (v-u)/t and so (v-u) = at

Therefore,

Distance travelled (s) = ut + ½ (v-u)t = ut + ½ (at)t = ut + ½ at²

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3 0
3 years ago
A bird is about 6.26.2 in.​ long, with a​ thin, dark bill and a​ wide, white wing stripe. If the bird can fly 9292 mi with the w
Trava [24]

Answer:

209 mph

Explanation:

V = Speed of bird in still air

v = Speed of wind = 44 mph

Consider the motion of the bird with the wind

D_{1} = distance traveled with the wind = 9292 mi

t_{1} = time taken to travel the distance with wind

Time taken to travel the distance with wind is given as

t_{1} = \frac{D_{1}}{V + v}

t_{1} = \frac{9292}{V + 44}                              eq-1

Consider the motion of the bird with the wind

D_{2} = distance traveled against the wind = 6060 mi

t_{2} = time taken to travel the distance against wind

Time taken to travel the distance against wind is given as

t_{2} = \frac{D_{2}}{V + v}

t_{2} = \frac{6060}{V - 44}                              eq-2

As per the question,

Time taken with the wind = Time taken against the wind

t_{1} = t_{2}

\frac{9292}{V + 44} = \frac{6060}{V - 44}

(9292) (V - 44) = (6060) (V + 44)

9292V - 408848 = 6060V + 266640

3232V = 675488

V = 209 mph

5 0
3 years ago
Which force is needed to give a 0.25-kg arrow an acceleration of 196 m/s2?
ludmilkaskok [199]

Force = mass × accelaration


Force = 0.25Kg × 196 m/s²


Force = 49 Newtons

8 0
3 years ago
Read 2 more answers
Rope BCA passes through a pulley at point C and supports a crate at point A. Rope segment CD supports the pulley and is attached
RUDIKE [14]

Answer:

Wmax = 63.65 ≈ 64 lb

Explanation:

6 0
3 years ago
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