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Trava [24]
3 years ago
14

An astronaut takes an object to the moon where there is less gravity. Explain how the mass and weight of the object on the moon

would compare to its mass and weight on Earth.
Physics
1 answer:
alexandr1967 [171]3 years ago
3 0
The mass of the object will remain the same rather it's on the moon or on the Earth and even in other places. But the weight will change on the moon, so its weight will be different from the one it had on Earth
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A child throws a ball with an initial speed of 8.00 m/s at an angle of 40.0° above the horizontal. The ball leaves her hand 1.00
vivado [14]

Answer:

7.5 m

Explanation:

v = initial speed of the ball = 8 m/s

\theta = angle of launch = 40° deg

Consider the motion along the vertical direction :

v_{oy} = initial velocity along vertical direction = v Sin\theta = 8 Sin40 = 5.14 m/s

a_{y} = acceleration along vertical direction = - 9.8 m/s²

t = time of travel

y = vertical displacement = - 1 m

Using the kinematics equation

y = v_{oy}t + (0.5)a_{y}t^{2}

- 1 = (5.14)t + (0.5)(- 9.8)t^{2

t = 1.22 sec

Consider the motion along the horizontal direction :

v_{ox} = initial velocity along horizontal direction = v Sin\theta = 8 Cos40 = 6.13 m/s

a_{x} = acceleration along vertical direction = 0 m/s²

t = time of travel = 1.22 sec

x = horizontal displacement = ?

Using the kinematics equation

x = v_{ox}t + (0.5)a_{x}t^{2}

x = (6.13)(1.22) + (0.5)(0)(1.22)^{2

x = 7.5 m

4 0
3 years ago
Which of the following describes the relationship between the weight of fluid
ioda
The answer is archimedes principle
8 0
2 years ago
Federal board paper of class 10 of physics​
zzz [600]

Answer:

If you are looking for past papers you can search that up and you will find plenty of resources that will help you out.

8 0
3 years ago
A ball is in free fall after being dropped. What willthe speed of the ball be after 2 seconds of free fall?
Mazyrski [523]

So, the speed of the ball after 2 seconds after free fall is <u>20 m/s</u>.

<h3>Introduction</h3>

Hi ! I'm Deva from Brainly Indonesia. In this material, we can call this event "Free Fall Motion". There are two conditions for free fall motion, namely falling (from top to bottom) and free (without initial velocity). Because the question only asks for the final velocity of the ball, in fact, we may use the formula for the relationship between acceleration and change in velocity and time. In general, this relationship can be expressed in the following equation :

\boxed{\sf{\bold{a = \frac{v_2 - v_1}{t}}}}

With the following conditions :

  • a = acceleration (m/s²)
  • \sf{v_2} = speed after some time (m/s)
  • \sf{v_1} = initial speed (m/s)
  • t = interval of time (s)

<h3>Problem Solving</h3>

We know that :

  • a = acceleration = 9,8 m/s² >> because the acceleration of a falling object is following the acceleration of gravity (g).
  • \sf{v_1} = initial speed = 0 m/s >> the keyword is free fall
  • t = interval of time = 2 s

What was asked :

  • \sf{v_2} = speed after some time = ... m/s

Step by step :

\sf{a = \frac{v_2 - v_1}{t}}

\sf{(a \times t) + v_1 = v_2}

\sf{(10 \times 2) + 0 = v_2}

\boxed{\sf{v_2 = 20 \: m/s}}

So, the speed of the ball after 2 seconds after free fall is 20 m/s.

8 0
2 years ago
How would a scientist go about determining if an unknown substance is an element, compound, solution, or heterogeneous mixture?
stepan [7]
<span>each of more than one hundred substances that cannot be chemically inter converted or broken down into simpler substances and are primary constituents of matter. Each element is distinguished by its atomic number, i.e., the number of protons in the nuclei of its atoms. thats part of one</span>
5 0
3 years ago
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