An apple of mass m = 0.13 kg falls out of a tree from a heighth = 3.2 m. (a) What is the magnitude of the force of gravity, mg,acting on the apple? (b) What is the apple’s speed, v, just before itlands? (c) Show that the force of gravity times the height, mgh, isequal to 12mv2. (We shall investigate the significance of this resultin Chapter 8.) Be sure to show that the dimensions are in agreement as well as the numerical values.

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A: in this question we use intigration and differentiation of acceleration,  velocity.

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Q: If an object is in motion, why can’t you conclude that it must be experiencing a net force?

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Q: Is Earth an inertial frame of reference? Is the Sun? Justify your response.

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Q: Compute the initial upward acceleration of a rocket of mass 1.3 * 104 kg if the initial upward force…

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Q: If a rocket in space is initially at rest and then accelerates at a rate of 50 m/s 2 for one minute…

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Q: A person of mass 50kg is falling at a terminal velocity of 60m/s. how much force does a superhero…

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Q: Which of these is an inertial reference frame (or a very good approximation)?A. Your bedroomB. A car…

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Q: What acceleration does a baseball of mass 0.27 experience when hit by a bat if 180 N are exerted by…

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Q: Is the value of acceleration due to gravity (g) the same at the different places on Earth? Why?

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Q: Can A Body Have A Constant Speed And Still Have A Varying Velocity?

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A:

Q: If a fly collides with the windshield of a fast-moving bus, which experiences an impact force with a…

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Q: A 4.0 kg object has a velocity of 3i m/s at one instant. Eight seconds later, its velocity is (8i +…

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Q: The height of a ball is thrown straight up sith a certain force is a function of the time (t) from…

A: height of the ball thrown straigh up is given by the function : f(t) = -0.5gt2 + 40 t

Q: Recall that Newton’s Equation of Motion for a Body of Mass, m, is F = m(dv/dt). Assume the Initial…

A: Given that:F=mdvdtFr=-kmvFg=-mg

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Q: What would happen if the downward acceleration was greater than g in an elevator?

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A:

Q: identified a type of fundamental particle called a muon, which effectively behaves like a very heavy…

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Q: The mass of a girl is 40 kg.calculate her weight. The weight of a stine is 98N.calculate its mass.…

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Q: What does Newton's 2nd Law state? O An object at rest stays at rest. An object in motion stays in…

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Q: Does the acceleration of a freely falling object depend to any extent on the location—that is,…

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Q: How do I know when normal force is greater than, less than, or equal to weight?

A:

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Q: Jules Verne in 1865 proposed sending men to the Moon by  ring a space capsule from a 220m long…

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Q: In an experiment to determine the acceleration due to gravity resulted in 9.6m/s^2 instead of…

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Q: Show by deriving a mathematical relation that the acceleration due to gravity decreases with depth.

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Q: Can a body have a constant speed but a varying velocity?

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Q: By virtue of the 3rd Law of Motion, we are pulled on Earth by gravity and we are also pulling the…

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”