Exam 2-Read everything here before you begin_

11/21/23, 10:52 PM Exam 2-Read everything here before you begin. https://primaverahs.strongmind.com/courses/25047/assignments/3008107?module_item_id=8434628 1/22

11/21/23, 10:52 PM Exam 2-Read everything here before you begin. https://primaverahs.strongmind.com/courses/25047/assignments/3008107?module_item_id=8434628 2/22 Question 1 Study the image. © 2016 FlipSwitch Which arrow represents the normal force on the box? A C D

11/21/23, 10:52 PM Exam 2-Read everything here before you begin. https://primaverahs.strongmind.com/courses/25047/assignments/3008107?module_item_id=8434628 4/22 Question 4 Question 5 Question 6 Study the image. © 2016 FlipSwitch In which direction is the overall force acting on the ball? to the right to the left upwards downwards Read the scenario. A cyclist is riding his bike at a constant speed of 5 m/s, and experiences a frictional for changes his speed to 10 m/s. What effect does this increase in speed have on the frictional force between the bike a The frictional force increases, but does not double because although friction inc fast. The frictional force between the bike and sidewalk stays the same because spe The frictional force doubles because when speed increases frictional force also The frictional force becomes half of what it was because when speed increases

11/21/23, 10:52 PM Exam 2-Read everything here before you begin. https://primaverahs.strongmind.com/courses/25047/assignments/3008107?module_item_id=8434628 5/22 Question 6 Question 7 Question 8 A ball moves along a smooth metal surface while an identical ball moves along concre Which surface exerts a smaller amount of frictional force on the ball? The concrete surface exerts less frictional force on the ball because there are fe are on the metal. The concrete and metal surfaces exert the same amount of frictional force on th Neither concrete nor metal exert any friction on the ball because these two surfa The metal surface exerts less frictional force because there are fewer bumps an Study the scenario. An object is at rest. At five seconds, someone comes over and pushes the object forw rest. Which of the following choices describes how static equilibrium could have been achie A force greater than 10 N was exerted in a forward direction on the object at ex the object remained at rest. A backward force of 10 N was exerted on the box at exactly five seconds so tha rest. A force of exactly 10 N was exerted straight down on the object, countering the A force greater than 10 N was exerted straight down on the object, countering t A large box remains at rest on a sidewalk while a person pushes on it with a force to th Which of the following choices shows the correct force diagram for this situation?

11/21/23, 10:52 PM Exam 2-Read everything here before you begin. https://primaverahs.strongmind.com/courses/25047/assignments/3008107?module_item_id=8434628 7/22 Question 9 Modified by FlipSwitch. vberla/Shutterstock Study the image of two people pushing on opposing sides of a dog house at the same Modified by FlipSwitch. vberla/Shutterstock Compute the amount of force acting on the doghouse using the vector addition rule. 0 N, the doghouse remains at rest.

11/21/23, 10:52 PM Exam 2-Read everything here before you begin. https://primaverahs.strongmind.com/courses/25047/assignments/3008107?module_item_id=8434628 8/22 Question 10 Question 11 0 N, the doghouse starts moving in one direction and then slows to a stop. 70 N, the doghouse remains at rest. 20 N, the doghouse remains at rest. Study the scenario. A car is moving along a frictionless surface with a speed of 2 m/s to the left. You and y You exert a force of 6 N to the left, while your friend exerts a force of 6 N to the right. According to Newton’s first law, how will this action affect the car’s motion? The car will stop immediately because two balanced forces will cause an object The car will continue to move 2 m/s to the left because there are balanced force The car will speed up because your force is in the same direction of the car’s m The car will continue moving to the left but at a slower speed because your frien A puck is sliding along a frictionless surface at constant velocity. Which of the following choices correctly models the forces acting on the puck? Arrows and labels added by FlipSwitch. Cline, Dusty/Shutterstock

11/21/23, 10:52 PM Exam 2-Read everything here before you begin. https://primaverahs.strongmind.com/courses/25047/assignments/3008107?module_item_id=8434628 10/22 Question 12 Question 13 Arrows and labels added by FlipSwitch. Cline, Dusty/Shutterstock You push a ball with a net force of 2 N and it accelerates. What happens if you exert 2 The object will accelerate the same amount as before because the mass does n The object will not accelerate because now it is too heavy. The object will accelerate 1/3 as much because if you apply the same net force The object will accelerate 3 times as much because if you apply the same net fo increase. Study the image. If the couch has a mass of 45 kg, determine its acceleration.

11/21/23, 10:52 PM Exam 2-Read everything here before you begin. https://primaverahs.strongmind.com/courses/25047/assignments/3008107?module_item_id=8434628 11/22 Question 14 Arrows and labels added by FlipSwitch. Macrovector/Shutterstock 0.33 m/s , to the right 2 2.2 m/s , to the right 2 3 m/s , to the right 2 1.8 m/s , to the right 2 An apple is thrown upwards. Which of the following force diagrams best models the fo while it’s moving upwards? Labels and arrows added by FlipSwitch. veronchick84/Shutterstock

11/21/23, 10:52 PM Exam 2-Read everything here before you begin. https://primaverahs.strongmind.com/courses/25047/assignments/3008107?module_item_id=8434628 13/22 Question 15 Question 16 Question 17 Labels and arrows added by FlipSwitch. veronchick84/Shutterstock Study the scenario. A toy car is pushed across the floor with a force of 4 N to the right. There is 1 N of frict What is the net force acting on the car? 0.25 N 5 N 4 N 3 N A 50 kg skydiver is falling downwards and accelerating 6 m/s down. What is the net fo 2 300 N, down 300 N, up 8.3 N, down 500 N, up

11/21/23, 10:52 PM Exam 2-Read everything here before you begin. https://primaverahs.strongmind.com/courses/25047/assignments/3008107?module_item_id=8434628 14/22 Question 17 Question 18 Question 19 Question 20 Which of these accurately describes Newton’s third law? “The stronger the net force acting upon an object, the greater the acceleration o “The relationship among mass, acceleration and net force.” “An object in motion stays in motion, and an object at rest stays at rest, unless a “For every action force, there is an equal and opposite reaction force.” If two objects with different masses are pushing each other, which exerts the greater fo The object with the greater mass exerts the greater force on the smaller object They both exert the same amount of force on each other regardless of their ma It is impossible to tell which object exerts the greater force unless we know whic The object with the smaller mass exerts the greater force on the larger object be move. A child pushes a desk with a force of 15 N to the right. The desk accelerates to the rig Newton’s third law and the interaction between the child and desk? The desk exerted slightly less than 15 N of force on the child, but the force is di The desk did not exert any force on the child. The desk exerted slightly more than 15 N of force on the child, but the force is d The desk exerted exactly 15 N of force on the child, but the force is directed to t Study the image

11/21/23, 10:52 PM Exam 2-Read everything here before you begin. https://primaverahs.strongmind.com/courses/25047/assignments/3008107?module_item_id=8434628 16/22 © 2016 FlipSwitch © 2016 FlipSwitch

11/21/23, 10:52 PM Exam 2-Read everything here before you begin. https://primaverahs.strongmind.com/courses/25047/assignments/3008107?module_item_id=8434628 17/22 Question 22 Question 23 © 2016 FlipSwitch © 2016 FlipSwitch If a bat with a mass of 5 kg and acceleration of 2 m/s hits a ball whose mass is 0.5 kg on the bat? 2 10 N, forward 0 N, forward 10 N, backward 0.5 N, upward A person is standing on ice. He throws a snowball with a force of 4 N to the right, while What is the net force on the person? 0 N

11/21/23, 10:52 PM Exam 2-Read everything here before you begin. https://primaverahs.strongmind.com/courses/25047/assignments/3008107?module_item_id=8434628 19/22 Question 28 Question 29 Question 30 Two crates are submerged under water. The crates are identical in size, but Crate A is has a greater buoyant force acting on it? Both crates have the same amount of buoyant force acting on them because th water. Crate A has a greater buoyant force acting on it because it is filled with iron, ma the object. Crate B has a greater buoyant force acting on it because it is filled with air, so it buoyant force acting on it. There is no way of knowing which object has a greater buoyant force acting on they have the same amount of buoyant force acting on them. A ball with a density of 1100 kg/m is submerged in two liquids: water ( ρ = 1000 kg/m 3 3 It will sink and accelerate downwards in water. It will float and accelerate upwar surrounding liquid sink, while objects with a smaller density than the surroundin The ball will sink in both the honey and the water because any solid object will s It will sink and accelerate downwards in honey. It will float and accelerate upwa surrounding liquid sink, while objects with a greater density than the surroundin We do not have enough information because we need to know the mass of the A balloon filled with some liquid is inflated and immersed under water. The balloon rem the balloon decreased while the mass remained the same? The balloon would float and accelerate upwards because there would be a grea The balloon would float and accelerate upwards because the smaller volume m The balloon would remain at rest because the mass stays the same and so the The balloon would sink and accelerate downwards because there would be a sm A box is immersed in a liquid and accelerates upward. Which force diagram best repre upwards?

11/21/23, 10:52 PM Exam 2-Read everything here before you begin. https://primaverahs.strongmind.com/courses/25047/assignments/3008107?module_item_id=8434628 20/22 Labels and arrows added by FlipSwitch. davooda/Shutterstock Labels and arrows added by FlipSwitch. davooda/Shutterstock