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RoseWind [281]
3 years ago
12

Galaxies are classified based on their a. shape. c. stars. b. color. d. age.

Physics
2 answers:
ArbitrLikvidat [17]3 years ago
7 0
<span> the answer is shape.</span>
Bogdan [553]3 years ago
7 0

Answer:

The answer is shape

Explanation:

Just took the test

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According to Newton's 3rd law of motion, if you hit a baseball with a bat it will _____.
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Fly in a straight line unless an outside force changes its course because i tried it once in a baseball game that my mommy rekt me in.
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A block of mass m sits at rest on a rough inclined ramp that makes an angle θ with the horizontal. What must be true about force
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μ =tanθ

Explanation:=

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μ=tanθ

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Imagine holding a basketball in both hands, throwing it straight up as high as you can, and then catching it when it falls. At w
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Answer:

C. At the instant the ball reaches its highest point.

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Since v = 0 at maximum height

F = m(0/t)

F = 0N

This shows that the force acting on the body is zero at the maximum height.

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Difinition of gravity
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While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 5.65 m/s. The stone subs
xxTIMURxx [149]

Answer:

1. 20.54m/s

2. 1.52s

Explanation:

QUESTION 1:

The speed the stone impact the ground is the final speed/velocity, which can be calculated using the formula:

v² = u² + 2as

Where;

v = final velocity (m/s)

u = initial velocity (m/s)

a = acceleration due to gravity (m/s²)

s = distance (m)

From the provided information, u = 5.65m/s, v = ?, s = 19.9m, a = 9.8m/s²

v² = 5.65² + 2 (9.8 × 19.9)

v² = 31.9225 + 2 (195.02)

v² = 31.9225 + 390.04

v² = 421.9625

v = √421.9625

v = 20.5417

v = 20.54m/s

QUESTION 2:

Using v = u + at

Where v = final velocity (m/s) = 20.54m/s

t = time (s)

u = initial velocity (m/s) = 5.65m/s

a = acceleration due to gravity (m/s²)

v = u + at

20.54 = 5.65 + 9.8t

20.54 - 5.65 = 9.8t

14.89 = 9.8t

t = 14.89/9.8

t = 1.519

t = 1.52s

3 0
3 years ago
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