If we know that an object is moving at a constant velocity, then we also know that: a. there are no forces acting on the object. b. the object is accelerating. c. the net force acting on the object is zero. d. the object is losing mass.

Q: A man weighing 700 N is in an elevator that is accelerating upward at 4 m/s2. The force exerted on…

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Q: A 12 kg object initially at rest on the ground is acted upon by two forces at the same time. One…

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Q: 14. Two people are pushing a car. The mass of the car is 1800 kg. One person applies a force of 270…

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Q: 3. You accelerate the two blocks in the figure by pushing on the bottom block with a force F. The…

A: Required The correct option

Q: 2. Which statement about force and motion is true? emsa A For every force, there is a motion. ® For…

A: Resultant of forces cause motion. Individual force may or may not cause motion.  Motion and force…

Q: 13) Which of the following is NOT a correct statement? A) It is possible for a body to be…

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Q: When a force of 300. 0 N is applied to a 20.0 kg object that experiences 200.0 N of friction a.…

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Q: An unbalanced force of 45.0 N acts on a 7.5 kg object. What acceleration is produced?

A: Given data: Force (F) = 45.0 N Mass (m) = 7.5 kg Required: Acceleration (a)

Q: A 1 000-kg car is pulling a 300-kg trailer. Together, the car and trailer move forward with an…

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Q: 412 N 908 N

A: Given: The weight of the right object is 908 N. The weight of the left block is 412 N. The free-body…

Q: Two people each have a mass of 65 KG.They are both in an elevator that has a mass a 400 KG. when the…

A: Mass of each person = 65 kg Number of persons = 2  Total mass of persons = 2×65   = 130 kg  Mass of…

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

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Q: 20. What happens to the inward acceleration of an object when the mass is quadrupled? a. The inward…

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Q: 2. When you apply a constant force to an object does the object move at a constant velocity or does…

A: Newton second's law of motion states that When a body is experiencing a constant force, then Force…

Q: 3. Two objects of masses M and m (M> m) are connected by a very light flexible string as shown in…

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Q: 200 n 400 n 30

A: Newton's second law of motion states that the acceleration of an object is directly proportional to…

Q: 1- a worker with spikes on his shoes pulls with a constant horizontal force of magnitude 20 N on a…

A: Given: The mass of the box is 40 kg. The force on the box is 20 N. Introduction: The force on a body…

Q: Q22. According to the Newton's second law of motion, the force applied on an object is given by O…

A: solution as

Q: How much force is needed to set an object in motion?  a. the same force to keep it in motion b.…

A: Newton's first law states that, if a body is in rest or moving at a constant speed in a straight…

Q: When a constant force is applied to an object, the acceleration of the object varies inversely with…

A: Given: The mass of the first object is 25 kg. The acceleration of the first object is 3 m/s2. The…

Q: 3. In an experiment using an inclined track with a dynamics cart, the computer failed, and the…

A: Let m be the mass of cart, M be the mass of hanging mass, g be the acceleration due to gravity, a be…

Q: 2. A Saturn V rocket has a mass of 2.75 × 106 kg and exerts a force of 33 × 10° N on the gases it…

A: Mass ( m) = 2.75× 106kg  Force (F) = 33×106N by engine

Q: 2. Acceleration is always in the direction: a) of the initial velocity c) of the final velocity e)…

A: Acceleration is always in the direction of the net  force acceleration  is the vector quantity its…

Q: 19. What does Newton's first law of motion state? Force equals mass times acceleration. An object…

A: So, let me first state the Newton second law of motion here because three among these options are…

Q: 2. A 10 kg block on a frictionless, horizontal surface is pulled by a string that passes over a…

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Q: 2. A horizontal force of 120 N is needed to initially move a 50-kg container from rest. A constant…

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Q: Q2/ A force of 10 N acts on a body of mass 2 kg. what is : a- The acceleration of body. b- Its…

A: Given data The force is given as F = 10 N. The mass of the body is given as m = 2 kg. a) The…

Q: Two ropes are attached to a 40 kg object. The rope with a 50 N force points along a direction 49…

A: mass = 40 N; forces= 50 N and 50 N; degrees = 49 degrees and 200 degrees;

Q: 2. A 10-kg box of books is initially at rest on a horizontal surface. A horizontal force of 60.0 N…

A: Given, Mass of box (m) = 10kg Box moves with constant speed if applied horizontal force is equal to…

Q: 1. A 45 N force acts on a 6 kg box causing it to move rightward across a rough surface (no air…

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Q: What is the reaction force to the normal force you experience sitting in a chair? a) the force that…

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Q: 2. A woman stands on a weighing scale in a non - moving elevator. When the elevator started to move,…

A: The apparent weight of person is, W'=0.6W

Q: 24. A pickup truck with mass 980 kg is initially at rest. The truck accelerates to a speed of 95…

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Q: car has an acceleration of 4.42 m/s². The net force acting on the bike is 750 N toward the west.…

A: We use Newton law to solve the problem

Q: 2. A loaded truck collides with a car causing huge damage to the car. Which of the following is true…

A: Given, A loaded truck colliders with a car causing huge damage to the car.

Q: 2. Two basketball players apply forces 10N and 12N on the ball during a game. What is the resultant…

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Q: An object has a mass of 50 kg and is accelerating at 20 m/s2 when it hits a brick wall. What is the…

A: Given: The mass of the object is m=50 kg. The acceleration is a=20 m/s2. The expression for the…

Q: A motorcycle and rider have a total mass of 300 KG. The rider applies the brakes, causing the…

A: Given that   mass (m) =300 KG  accelerate (a)= -5 m/s2  What is the net force on the motorcycle?

Q: 67. Which graph best represents the motion a. on it? Time Time (3) (1) Time Time (2) (4) 68. Four…

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Q: A 1500 kg high passports car can go from 0 to 161 km/h in 6.4 s (assume the car travels in the…

A: Given: Mass of passports car m = 1500 kg. initial velocity of car u = 0 km/h = 0 m/s. Final velocity…

Q: A leaf on a tree stars moving when the wind blows on it how is this an example of newton's first law…

A: Scenario: Leaves of tree are at rest and suddenly wind is encountered, as a result leaves start…

Q: 7. If we know an object is moving at constant velocity, then we can be certain... the net force…

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Q: A 14.0 kg child and a 250 kg sofa are on a frictionless surface. The child pushes on the sofa with…

A: In the given question, Mass of child (m) = 14kg Mass of sofa (M) = 250kg Force on the sofa by the…

Q: How long does it take a 50 kg rider on a 10 kg bicycle to accelerate from rest to 4.0 m/s [E] if the…

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Q: A truck collides with a car, and during the collision, the net force on each vehicle is essentially…

A: Write the given values with the suitable variables. m1=850 kgm2=2750 kga2=14 m/s2 Here, m1, m2, and…

Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.