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3 years ago

An object is shot 8 m/s horizontally from a 7 m tall cliff. How far away does it land?

Physics

1 answer:

Angelina_Jolie [31]3 years ago

7 0

Answer:

R = 9.52 m

Explanation:

When an object is thrown horizontally from a certain height into the air under the effect of the gravitational force, the movement of the projectile is observed. Projectile motion has two component, Horizontal component and vertical component.

Initially, Projectile motion has only horizontal component and vertical component is equal to zero. Gradually vertical component of velocity increases due to the influence of gravity.

As the ball followed the projectile path, and we know that in projectile motion the horizontal component of the velocity remains constant throughout its motion. So there is no acceleration along horizontal path.

Given data :

Initial velocity = $v_{i} = v_{i_{x}}$ = 8 m/s

Height = h = 7 m

Horizontal range = R = ?

According to 2nd equation of motion

h = $v_{i_{y}}$ t + 0.5gt²

7 = 0.5*9.8*t²

t = 1.19 s

Using R = $v_{i_{x}}$ t

R = 8*1.19

R = 9.52 m

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Answer:

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3 years ago

Which statements describe the relationship between the area and the biodiversity of an ecosystem? Check all that apply. Large ec

snow_tiger [21]

Answer:

A large area of a forest will likely have higher biodiversity than a smaller area of the same forest.

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Explanation:

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Another one is that A half acre of rainforest would likely have greater biodiversity than a full acre of desert.

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3 years ago

Read 2 more answers

A 2.45-kg frictionless block is attached to an ideal spring with force constant 355 N/m. Initially the spring is neither stretch

ANTONII [103]

Answer:

A. A = 0.913 m

B. amax = 132.24m/s^2

C. Fmax = 324.01N

Explanation:

When the block is moving at the equilibrium point , its velocity is maximum.