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4 years ago

6

Haileys comet is a comet that passes close to earth every 75 years. based on this passage, which gravitational attraction has th

e most influence on the movement of this astronomical object

2 answers:

Strike441 [17]4 years ago

8 0

The answers to this question is gravity that what I would pick

yawa3891 [41]4 years ago

7 0

Answer:

gravity lol

Explanation:

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Which statements describe projectile motion? Check all that apply.

miv72 [106K]

In projectile motion we can say initial components of velocity is

$v_x = v_0 cos\theta$

$v_y = v_0 sin\theta$

now here horizontal motion is uniform motion as there is no force in this direction while in vertical direction due to gravity it will accelerate

so we have

$x = v_0 cos\theta * t$

$y = v_0 sin\theta * t - \frac{1}{2}gt^2$

so here we have x and y coordinates are related to each other as it will take same time to move the positions

so here correct options are

<em>Projectile motion is a combination of horizontal and vertical motion. </em>

<em>The horizontal and vertical motions of a projectile are dependent on each other.</em>

5 0

3 years ago

Read 2 more answers

"A 75 kg swimmer dives horizontally off a 500 kg raft. If the diver's speed immediately after leaving the raft is 4 m/s, what is

svet-max [94.6K]

Answer:

0.6 m/s

Explanation:

Let the raft speed be v.

Given:

Mass of the swimmer (m) = 75 kg

Mass of the raft (M) = 500 kg

Speed of swimmer after leaving the raft (u) = 4 m/s

Now, the given situation can be considered a problem of conservation of total momentum before and after collision.

Momentum is the product of mass and velocity.

Here, the swimmer and raft are the bodies in collision.

So, before the collision, both the bodies were at rest. So, initial momentum is 0. Now, from conservation of momentum, the final momentum of the system must be 0 after the collision. Therefore,

Final Momentum = 0

$mu+Mv=0\\\\Mv=-mu\\\\v=-\dfrac{mu}{M}$

Plug in the given values and solve for 'v'. This gives,

$v=-\frac{75\times 4}{500}\\\\v=-\frac{300}{500}=-0.6\ m/s$

The final velocity of the raft is -0.6 m/s. Now, speed is the magnitude of velocity.

Therefore, the corresponding raft speed is 0.6 m/s.

7 0

3 years ago

The effects of force on gravity is more noticeable when the object is_____

Vsevolod [243]

Answer:

Gravity only becomes noticeable when there is a really massive object like a moon, planet or star. We are pulled down towards the ground because of gravity. The gravitational force pulls in the direction towards the centre of any object.

8 0

3 years ago

What part of an atom determines its size

velikii [3]

The answer is it's middle the nueculs

7 0

3 years ago

Image formed in a concave

Hunter-Best [27]

Answer:

A

Explanation:

the image formed behind the mirrow= virtual

and the size of the image increase and upright

8 0

3 years ago