How come in free fall you feel weightless even though gravity is pulling down on you (disregarding air resistance)?

Q: Is it possible for a body to have inertia but no weight?

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Q: How does the force of gravity between two bodies change when the distance between them is doubled?

A: the expression for the gravitational force between two bodies of mass m and M is,

Q: Is the force of gravity stronger on piece of iron than on the piece of wood if both have the same…

A: The force of gravity between the two object masses is,From the above expression, it is clear that…

Q: If air drag can be ignored, at what point in its trajectory does a batted baseball have its minimum…

A: Ball will have minimum speed at the highest point of the trajectory. This is because, at highest…

Q: Under what circumstances your weight becomes zero?

A: Weight is,

Q: Why does a person in free fall experience weightlessness, while a person falling at terminal…

A: A person experiences weightlessness when the only force acting on him is the gravitational force and…

Q: Was it Galileo or Newton who first proposed idea of inertia?

A: At the beginning, Idea of inertia is proposed by Galileo.

Q: An astronaut of mass 70 kg weighs 700 N on Earth's surface. His weight on the surface of Mars, where…

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Q: Which would require a greater force - accelerating a 2 kg mass at 5 m/s² or a 4 kg mass at 2 m/s??

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Q: Suppose that you jounce up and down while weighing yourself on a bathroom scale. Which varies: the…

A: If a person is jouncing up and down while weighing yourself on a bathroom scale the normal force…

Q: Another friend says that the Moon’s gravity would prevent rocks dropping from the Moon to Earth, but…

A: Since the distance between the Moon and the Earth is very large, thus, the Earth’s gravitational…

Q: Example of weightlessness?

A: If there is no external contact force acting us, then we feel weightless.

Q: What is the difference between centripetal acceleration and centrifugal force?

A: For an object moving in a circular path, even the speed is constant, it will experience acceleration…

Q: How does the gravitational force on a falling body compare with the air resistance it encounters…

A: Terminal velocity is an example of balanced force balance the gravitational forces and the air…

Q: when air resistance and weight are equal the objects stop accelerating and reaches its terminal…

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Q: ut experiences weightlessness in

A: An astronaut experiences weightlessness in deep outer space

Q: Which feels a greater pull due to the earth’s gravity: a 10 kg stone or a 20 kg stone? If you drop…

A: Force of gravity

Q: When you stand on Earth, your feet push against it with a force equal to your weight. Why doesn’t…

A: By the Newton second law, the acceleration of anybody can be calculated as,  Here, F is net force…

Q: If you were on an alien planet, where multiple sources of gravity were affecting you, would the…

A: The gravity simply means pulling all things toward ground. human body develop itself according to…

Q: Can your weight change depending on where you are standing on the earth?

A: Weight is defined as the product of mass and the acceleration due to gravity.

Q: Why does a bungee jumper feel weightless during the jump?

A: A bungee jumper feels weightlessness when he jumps the platform. When the jumper is standing on the…

Q: Would the springs inside a bathroom scale be more compressed or less compressed if you weighed…

A: Part A If the lift is moving upward with constant velocity, the net acceleration is zero. Which…

Q: Do heavier objects fall more slowly than lighter objects ? Why??

A: No, both lighter and heavier objects fall with the same speed.

Q: What would a person weigh on the moon where the acceleration due to gravity is 1.67m/s, if their…

A: Given data: Acceleration due to gravity on the moon (g) = 1.67 m/s2 Mass (m) = 75 kg Required:…

Q: A 60 kg man is standing on a scale in an elevator moving up at 2 m/s^2, what is his weight? What is…

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Q: An elephant and a coin are both falling. If gravity is the only force affecting them, which object…

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Q: Can we survived without gravity?

A: The atmosphere and water held due to gravity . Without gravity the atmosphere disappear.

Q: How much force in Newton, must a 20,000 kg jet plane develop to achieve an acceleration of 1.5 m/s2?

A: Mass of the jet plane, m = 20000 kg Acceleration of the jet plane, a = 1.5 m/s2   Applying the…

Q: How much would an 82 kg man weigh on the moon where the acceleration due to gravity is 1/6 that on…

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Q: Your friend says that the primary reason astronauts in orbit feel weightless is that they are beyond…

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Q: what is the differnce between apple faaliing and gravitational force

A: Let me tell you first the connection between both We all are aware of gravitational force and we…

Q: Why are we not thrown off the surface of Earth by cerntrifugal force?

A: We are not thrown off the surface of Earth by centrifugal force because the gravity pull on our body…

Q: The difference between mass and weight can be illustrated by consideringan astronaut. How do an…

A: mass is defined as the amount of matter available in a material  but  weight is defined as how much…

Q: A tomato is thrown upward. As it rises, the gravitational force does

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Q: How does the force of gravity between two objects change when one of the masses is quadrupled?

A: The Gravitational force between two masses is given by,          F = Gm1m2r2 here           m1 and…

Q: A person weighs 60 kilograms here on the surface of the earth. If the acceleration due to gravity on…

A: GivenMass of person on earth ,M=60 kgAcceleration due to gravity on Mars ,gmars=3.7 m/s2

Q: The mass of an object is O egal to its weight in deep pace Ovonfetimes egil to its wght Onever eqal…

A: Mass of object is defined as the quantity of matter of a physical body

Q: if you drop a feather on and a steel hammer at the same moment, they should hit the ground at the…

A: The second equation of motion is  where, s is the distance, u is the initial velocity, t is the…

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.