A rock is thrown straight up. What is the net external force acting on the rock when it is at the top of its trajectory?

Q: . A woman stands on a weighing scale in a non-moving elevator. When the elevator started to move,…

A:

Q: At which of the following points is the net force on the rock equal to zero? At the top of the…

A:

Q: A book is resting on the surface of a table. Consider the four forces in this situation: Fl=the…

A: “Action reaction” pairs that obey newton’s  The third law is F1 and F2 Because from Newton’s third…

Q: which cannot be used as an inertial reference frame  a.block sliding down at constant velocity b.…

A: b. a car turning in curved intersection Reason 1) An inertial referance frame in which object at…

Q: Mr. One is pushing a cart with a force of F1 = 15.00 N due north. Mr. Two is pushing the same cart…

A: Analyze the following diagram showing the forces by Mr one and Mr, two acting on the cart. The…

Q: Calculate the force of friction acting on the object. A 10 kg rubber block sliding on concrete…

A: Given value--- a -- mass = 10 kg.                 coefficient of friction = 0.65 . b --  mass = 8…

Q: A woman stands on a weighing scale in a non - moving elevator. When the elevator started to move,…

A: Let the weight of a woman in a non-moving elevator be W = mg  Now when the elevator starts moving…

Q: A bird sits on a branch of a tree. Which of the following forces forms an action-reaction pair…

A: Introduction:Newton's third law state that every action has an equal and opposite reaction to the…

Q: Two blocks are fastened to the ceiling of an elevator as in Figure P4.19. The elevator accelerates…

A: Equation of motion of Upper block is as follows: ma=T1-2mg…

Q: A skydiver is parachuting down to earth, falling at a constant speed. What forces are on the…

A: Newton's 2nd law of motion gives us the rate of change of momentum is called force. When there is a…

Q: 30° A skier with a mass of 62 kg is sliding down a snowy slope. The coefficient of friction is 0.13…

A:

Q: A cleaner pushes a 4.60 kg laundry cart in such a way that the net external force on it is 59.5 N.…

A: Given: The mass of the laundry is 4.6 kg. The applied force is 59.5 N.

Q: Mr. One is pushing a cart with a force of F1 = 15.00 N due north. Mr. Two is pushing the same cart…

A:

Q: A box of mass 2 kg has two forces pulling on it in opposite directions. One is pulling to the left…

A: Given,  mass, m = 2 kg acceleration, a=? The horizontal right is taken as the positive x-axis.…

Q: A 200 kg man rides in an elevator while standing on a scale. As the elevator rises with a constant…

A:

Q: "Objects at rest remain at rest; objects in motion remain at constant velocity unless they…

A: Newton's first law of motion states that- 'an object at rest will remain to be at it's state of rest…

Q: A stone is thrown straight up in the air.  A) Draw a free-body diagram of the stone on its path.…

A: The stone is thrown upwards, hence it will trace a vertical projectile path with deceleration of…

Q: 2. A 5.0 kg flying squirrel is flying from a tree to the ground at constant velocity. Consider air…

A:

Q: Which situation best describes the law of force and acceleration? A. Restraints keep passengers from…

A: To accelerate a roller coaster with more riders, a larger force required.

Q: A 5.0 kg dog sits on the floor of an elevator that is accelerating downward at 6.00 m/s2. What is…

A: Given data:  Mass (m) = 5 kg Acceleration (a) = 6.00 m/s2, downward Required: The magnitude of the…

Q: You throw a ball vertically upward. After the ball has left your hand and is moving upward, what…

A: As per company policy, we are restricted to solve one question at a time. Please ask other question…

Q: Mr. One is pushing a cart with a force of F1 = 15.00 N due north. Mr. Two is pushing the same cart…

A:

Q: In the absence of air drag, the acceleration due to gravity is 9.81 m/s². What is the magnitude of…

A: Draw the free-body diagram of the body as:

Q: Mr. One is pushing a cart with a force of F1 = 15.00 N due north. Mr. Two is pushing the same cart…

A:

Q: You are driving in your car and you apply a constant force to your brake pedal. Which of the…

A:

Q: A cleaner pushes a 3.8 kg laundry cart in such a way that the net external force on it is 58 N. a.…

A:

Q: Consider a light pulley hanging from the ceiling. A rope passes over this pulley with a 21.6 kg…

A:

Q: Which one(s) of the following force diagrams depict an object moving to the right with a constant…

A: Option A and C represent object moving to the right with a constant speed. For an object to move…

Q: A golf ball is hit with a golf club.While the ball flies through the air, which forces act on the…

A: A golf ball is hit with a golf club.

Q: A ball with a mass of 5 kg is accelerating at 5 m/s/s. What is the force acting on the ball? 5 N 25…

A: From Newton’s 2nd law, the force acting on the ball is given as, Here, m and a represent the ball’s…

Q: What type of force acts on a car moving around a curve? A) Centrifugal force B) Cohesive force C)…

A: Introduction: When curvilinear motion tends to form a closed loop, then it is considered as circular…

Q: A person with a mass of 75.0 kg stands on a scale in an elevator. What does the scale read when (a)…

A: (a) Take the upward direction to be positive. The forces acting on the person are the weight of the…

Q: pulls a cart along a flat road. Consider the following four forces that arise i prce of the horse…

A: Newtons third law : for every action there is equal and opposite reaction. here action and reaction…

Q: Four skydivers jump from a helicopter. Diver A: 65 Kg Diver B: 85 Kg Diver C: 100 Kg Diver D: 105 Kg…

A: Free fall is a motion of an object under the influence of gravity, where no other force is working…

Q: A skydiver falls downward through the air at a constant velocity Draw the appropriate force or free…

A:

Q: A small sports car collides head-on with a massive truck. The greater impact force (in magnitude)…

A: Sports car is small and truck is massive that means mass of car is small then truck. .

Q: Mr. One is pushing a cart with a force of F1 = 15.00 N due north. Mr. Two is pushing the same cart…

A: Given F1 = 15.00 N ( due north) F2 = 25.00 N ( due north-east)

Q: falling at a constant speed. What forces are on the skydiver? 1. Up 2. Down 3. Left

A: For a freely falling man, downward acceleration is equal to the acceleration due to the gravity.…

Q: In which of the following cases would you feel weightless? A Walking on the moon B. Falling from an…

A: Weightlessness is felt when the only force acting on a body is the force of gravity. Force of…

Q: Which situation describes an object that has no unbalanced force acting on it? 1. an apple in free…

A: When there is no unbalanced force acting on an object then the net force on the object is zero and…

Q: |1. Which of the following force diagrams depicts an object moving to the right with a constant…

A: We have to mention that which of the following diagram depicts an object moving to the right with a…

Q: The force that keeps a body in a circular motion called    A) the centripetal force B) the…

A: An object moving in a circular path changes its direction and velocity at every point.

Q: Mr. One is pushing a cart with a force of F1 = 15.00 N due north. Mr. Two is pushing the same cart…

A: To calculate the value of F→3, Let us first resolve the other forces. The force F→1 is acting…

Q: Identify the action and reaction forces in the following situations: (a) Earth attracts the Moon,…

A: We can identify the action and reaction forces by employing Newton's Third law which states that…

Q: A ball with a weight of 20N is thrown vertically upward. What is the acceleration of the ball just…

A: The Accleration of the ball in it overall journey will remain constant and that is   g (10 m/s2)…

Q: An 800 kg elevator is going down and accelerates at 2.0 m/s^2. Find the tension (Newton) in the…

A: Draw the free-body diagram of the system.

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!