Choose the best answer to the following: According to Hooke’s law, if you hang by a tree branch and note how much it bends, then hanging with twice the weight produces (a) half the bend. (b) the same bend if the branch doesn’t break. (c) twice the bend. (d) 4 times the bend.

Q: What is the net force on a 50 kg skydiver when she hits terminal velocity?

A: At terminal velocity the drag force on the skydriver is equal to the force due to gravitation.…

Q: Looking outside of your window, you notice a bird gliding in the air at a constant speed. Should air…

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Q: You and a friend can each pull with a force of 20 N. If you want to rip a rope in half, what is the…

A: Answer Tie the rope to a tree, and you both pull from the same end. Take advantage of the fact that…

Q: Why don't I feel miles of air above me that are crushing me down?

A: Air is a fluid and it can exert weight on our body. But a person cannot feel that the air above him…

Q: Drop two balls of different masses from the same height, and, at low speeds, they practically fall…

A:

Q: Based on Hooke's law (F = kx), if you double the average distance of the mass from equilibrium, what…

A: We have to apply the Hook's law concept here  F=kx

Q: A parachute descends slowly. Why?

A: When any object falls from a height, gravity acts on it, which pulled it downwards, but the air…

Q: Newton’s third law of motion states that for every action there is an equal and opposite reaction.…

A: Newton’s third law of motion states that for every action there is an equal and opposite…

Q: A 2 kg box is suspended in the air. Attached to each corner of the box is a rope. All 4 ropes are…

A: SOlution: given that m = 2 kg Each corner of the box attached with 4 ropes are the same length and…

Q: A spring 0.2 m long extends 0.001 m when a mass of 72 kg is hung from it.  How far will a similar…

A: GivenFor spring 1length of spring ,L1=0.2 mMass hung with spring ,m1=72 kgSpring extend to length…

Q: Vhat Have I Learned So Far? that the vessel cruises the water at a speed of 5 m/s. water? Solution:

A: By concept of relative motion 1) V = 5+1 = 6m/s  2) V = 5-1 = 4m/s

Q: Consider this situation: A baseball travels upward and rightward through the air. Of the forces…

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Q: When a man is standing on a scale in an elevator that is accelerating upward, the scale reading will…

A: When a man is standing on a scale in an elevator that is acceleration upward , the scale reading…

Q: According to Newton's law of motion, an object with less mass will experience a greater acceleration…

A:

Q: What is the mass of a 100- N crate of delicious peaches ? What is the weight in pounds of the 100-N…

A:

Q: When you push against a wall with your fingers, they bend because they experience a force. What is…

A: Newton's third law of motion tells us that for every action there is an equal and opposite reaction.…

Q: why do we slip on a muddy road?

A: Frictional force enables us to provide grip on the road when we are walking. It arises mainly due to…

Q: An object of mass m, - 4kg placed on a frictionless, horizontal table is connected to a string that…

A: Solution: Given that m1 = 4 kg m2 = 6 kg

Q: What is the effect of air resistance on the acceleration of falling objects? What is the…

A: A freely falling object is any object moving either upward or downward under the influence of…

Q: What is force in simple words with pictures?

A: Force is a push or a pull that changes or tends to change the state of rest or uniform motion of a…

Q: What is meant by terminal velocity?

A: Terminal velocity is defined as the highest velocity attained by an object that is falling through a…

Q: Troy Ginometri, owner of the local floral shop, displays the sale of the month in the front window…

A:

Q: A force from water which pushes a body upward against gravity is known as

A: When an object is placed in a water, the water exerts an upward force we call it buoyant force. The…

Q: What is the NET FORCE? * 6 N 3 N

A: Net force on the block

Q: 70. Friction is a force like any other force and affects motion. Friction occurs in * solids sliding…

A:

Q: Another term for "perpendicular" in mathematics is "normal", and thus another name does normal force…

A: In the statement given that,  Perpendicular in mathematics is normal and thus normal force is the…

Q: Newton’s third law states that every action is just an action with no expected reaction.

A: newtons third law states that every action has an equal and opposite reaction.

Q: What is a gyroscope and how is it used as a navigational aid?

A: A gyroscope is a device which spins at high speeds and which maintains its spinning axis on the same…

Q: According to Newton's second law of motion, in which of these situations is the object accelerating?…

A:

Q: What is a net force? What is an unbalanced force?

A:

Q: A ballon is being pushed upwards by the force of the hot air inside it. If the ballon has a mass of…

A:

Q: Why does a rope climber pull downward on the rope to move upward?

A: Newton’s third law of motion says that, for every action, there is an equal and opposite reaction.

Q: How much force in pounds is required to steadily lift a 400.0N physics book straight up?

A: Weight of physics book, W=400 N

Q: What is the relationship between weight and mass? Which is an intrinsic, unchanging property of a…

A: Weight and mass

Q: Choose the BEST answer to the following: The force needed to keep a ball tolling along a bowling…

A: The ball rolling along a bowling alley is acted upon by the force of friction during its skid and…

Q: What is the weight of (a) a 5.2 kg package of nails in Newtons?

A:

Q: The lesser is the mass of an object the less force is needed to make it move'. State the Newton's…

A: The force is directly proportional to the mass of an object.

Q: What is the net force

A: Force is a vector quantity therefore while calculating net force on an object the individual forces…

Q: Why does a man not feel weight while sitting inside a freely falling lift?

A: Free-fall is a motion of a body where gravity is the only acceleration acting upon it. A body in…

Q: 4. 6 N - 3 N

A: Net force is equal sum of forces act in same direction  So 6N and 3 N are act in same direction…

Q: You jump up into the air. Which of the following is propelling you up into the air? Gravity Your…

A:

Q: A spring in the weighing scale compresses in length by 0.14 inches for every 1.0lb, of applied…

A: Given length by 0.14 inches acceleration of gravity is 31 ft/s². spring to be compressed by…

Q: What is the one thing in common between a helmet, a stretchable cord in bungee jumping, bending the…

A: Common thing among : a helmet, a stretchable cord in bungee jumping, bending the knees after landing…

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?”