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Hatshy [7]
3 years ago
8

Hey guys! Am I right? Thanks!

Physics
1 answer:
worty [1.4K]3 years ago
5 0

Answer:

the correct answer is reduce friction

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A projectile is fired with an initial speed of 100 m/s and angle of elevation 30 degrees. The projectile eventually hits the gro
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Answer:

Explanation:

Given

launch velocity u=100\ m/s

Launch angle \theta =30^{\circ}

Range of Projectile R=\frac{u^2\sin 2\theta }{g}

R=\frac{100^2\times \sin (2\times30)}{9.8}

R=883.699\approx 883.7

Horizontal velocity remain same and only vertical velocity changes.

Initially  vertical  velocity is in upward direction but as soon as it reaches the ground its direction change but magnitude remain same.

u_y=100\sin (30)=50\ m/s

u_x=100\cos (30)=86.60\ m/s

u_{net}=\sqrt{(50)^2+(86.60)^2}

u_{net}=99.99\approx 100\ m/s      

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3 years ago
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Which of these is a landform created due to erosion by glaciers? Delta Horn Sandbars Spit
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The answer is option B, horn.

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The landform horn was formed because when glaciers erode down to form a sharp peak which is called a horn. All of the other options are false because none of those land forms are formed because of the erosion of glaciers

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How long does a ship take to cross the pacific?
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1) Do liquids and gases also exert pressure?​
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