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Intro to Forces + Newton's Laws Solutions Library

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19 solutions

Intro to Forces + Newton's Laws

Q.  6 kg bucket of water is being pulled straight up by a string at a constant speed. I determined that the tension on the string wasF = maF = (6kg * ...

Solved • Mar 18, 2020

Intro to Forces + Newton's Laws

Q. An object cannot remain at rest unlessa) there are no forces at all acting on it.b) the net force acting on it is zero.c) the net force acting on i...

Solved • Mar 17, 2020

Intro to Forces + Newton's Laws

Q. If a car is moving to the left with constant velocity, one can conclude thata) there must be no forces applied to the car.b) the net force applied ...

Solved • Mar 11, 2020

Intro to Forces + Newton's Laws

Q. A book is at rest on an incline as shown above. A constant force vertically downward is in contact with the book. The following figures show severa...

Solved • May 24, 2017

Intro to Forces + Newton's Laws

Q. Despite a very strong wind, a tennis player manages to hit a tennis ball with her racquet so that the ball passes over the net and lands in her opp...

Solved • May 17, 2017

Intro to Forces + Newton's Laws

Q. An object is moving to the right, and experiencing a net force that is directed to the right. The magnitude of the force is decreasing with time. T...

Solved • Mar 6, 2017

Intro to Forces + Newton's Laws

Q. If you were to move into outer space far from any stars on planets, A) both your weight and mass would change. B) your mass would change, but you...

Solved • Jan 18, 2017

Intro to Forces + Newton's Laws

Q. Which of the following statements about forces is  not correct?A) In order for an object to turn, a force must be applied on itB) In order for an o...

Solved • Jan 18, 2017

Intro to Forces + Newton's Laws

Q. Suppose someone is standing on a scale.  (a) Draw a free body diagram of the forces acting on the person (b) List what the scale would read if th...

Solved • Jan 16, 2017

Intro to Forces + Newton's Laws

Q. Under the influence of a constant force F, an object with mass m has acceleration a. Halving the force but doubling the mass will change the accele...

Solved • Jan 16, 2017

Intro to Forces + Newton's Laws

Q. A rock attached to a string is whirled in a horizontal circle. If the string breaks suddenly, the rock will A) initially move radially outward fro...

Solved • Jan 16, 2017

Intro to Forces + Newton's Laws

Q. In outer space, where there is no gravity or air, an astronaut pushes with an equal force of 15 N on a 3-kg moon rock and on a 6-kg moon rock.A) Si...

Solved • Jan 16, 2017

Intro to Forces + Newton's Laws

Q. A 140-lb restaurant manager received a shipment of frozen meat in a 1600 N crate. She pushes it across the floor applying a 90 N force with her han...

Solved • Jan 16, 2017

Intro to Forces + Newton's Laws

Q. A child weighs 335 N. What is the child's mass?A) 3286.4 kgB) 75.3 kgC) 335.0 kgD) 1488.9 kgE) 34.1 kg

Solved • Jan 13, 2017

Intro to Forces + Newton's Laws

Q. In outer space, where there is no gravity or air, an astronaut pushes with a force of 25 N on a 2 kg moon rock with one hand and force of 25 N on a...

Solved • Jan 13, 2017

Intro to Forces + Newton's Laws

Q. A 165 lb researcher received a shipment of lab equipment in a 1600 N crate. She pushes it across the floor applying a 115 N force with her hands. W...

Solved • Jan 13, 2017

Intro to Forces + Newton's Laws

Q. Newton's Third Law of Motion says: Forces always come in pairs: when one object exerts a force on a second object, the second exerts an equal and o...

Solved • Jan 13, 2017

Intro to Forces + Newton's Laws

Q. A body moves in a straight line with a constant speed. Which of the following must be true?A) There is no net force acting on the body.B) There is ...

Solved • Jan 13, 2017

Intro to Forces + Newton's Laws

Q. A box, mass 3.5 kg, sits on a horizontal frictionless table. A 11 N force is applied to the box at an angle 27° below the horizontal. What is the r...

Solved • Dec 22, 2016