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... 20 000 J *B. 200 000 J C. 400 000 J D. 800 000 J E. 10 000 J 4. In which one of the following systems is there a decrease in gravitational potential energy? A. a boy stretches a horizontal spring *B. a girl jumps down from a bed C. a crate rests at the bottom of an inclined plane D. a car ascends a ...
... 20 000 J *B. 200 000 J C. 400 000 J D. 800 000 J E. 10 000 J 4. In which one of the following systems is there a decrease in gravitational potential energy? A. a boy stretches a horizontal spring *B. a girl jumps down from a bed C. a crate rests at the bottom of an inclined plane D. a car ascends a ...
Unit 1
... • Explain qualitatively and quantitatively the relationship between force, mass and acceleration– the greater the force on an object, the greater its change in motion; however, the same amount of force applied to an object with less mass results in a greater acceleration. • While Newton’s second law ...
... • Explain qualitatively and quantitatively the relationship between force, mass and acceleration– the greater the force on an object, the greater its change in motion; however, the same amount of force applied to an object with less mass results in a greater acceleration. • While Newton’s second law ...
Fall Final Study Guide Define a scalar quantity. A bicycle rider
... together is 77 kg. The rider coasts up the hill. Assuming that there is no friction, at what height will the bike come to rest? 0.62 m 68. A ball falls freely from rest for 15.0 s. Calculate the ball's velocity after 15.0 s. (-147 m/s) 69. Can an object change its acceleration without an outside for ...
... together is 77 kg. The rider coasts up the hill. Assuming that there is no friction, at what height will the bike come to rest? 0.62 m 68. A ball falls freely from rest for 15.0 s. Calculate the ball's velocity after 15.0 s. (-147 m/s) 69. Can an object change its acceleration without an outside for ...
( )x ( )y
... when the car suddenly speeds up. In this situation, your body will accelerate forward because the seat exerts a force on it. If there is no headrest, your head will snap backward due to inertia, possibly resulting in a neck injury. Since you are moving forward and your head is moving backward, and t ...
... when the car suddenly speeds up. In this situation, your body will accelerate forward because the seat exerts a force on it. If there is no headrest, your head will snap backward due to inertia, possibly resulting in a neck injury. Since you are moving forward and your head is moving backward, and t ...
611-1820 (5-110) Greek Waiters Tray
... object is proportional to the applied force and inversely proportional to the mass.” ...
... object is proportional to the applied force and inversely proportional to the mass.” ...
Exercises - PHYSICSMr. Bartholomew
... 15. An object accelerates when a net force is applied to it. Circle the letter describing the conditions that would double the object’s acceleration. a. doubling the mass b. halving the force c. doubling the mass and halving the force d. halving the mass 16. During a lab experiment, a net force is a ...
... 15. An object accelerates when a net force is applied to it. Circle the letter describing the conditions that would double the object’s acceleration. a. doubling the mass b. halving the force c. doubling the mass and halving the force d. halving the mass 16. During a lab experiment, a net force is a ...
PHYS 1443 – Section 501 Lecture #1
... A man cleaning a floor pulls a vacuum cleaner with a force of magnitude F=50.0N at an angle of 30.0o with East. Calculate the work done by the force on the vacuum cleaner as the vacuum cleaner is displaced by 3.00m to East. ...
... A man cleaning a floor pulls a vacuum cleaner with a force of magnitude F=50.0N at an angle of 30.0o with East. Calculate the work done by the force on the vacuum cleaner as the vacuum cleaner is displaced by 3.00m to East. ...
Newton`s Laws
... Whenever one object exerts a force on a second object, the second exerts an equal and opposite force on the first ...
... Whenever one object exerts a force on a second object, the second exerts an equal and opposite force on the first ...
physics midterm review packet
... 13. What quantity is zero when a projectile is at its maximum height? 14. What are the units for: distance, velocity, acceleration, force, work, energy, power… 15. An object has a weight of 50 N on the Earth and a second object has a weight of 50 N on the moon. Which has the greater mass? 16. A car ...
... 13. What quantity is zero when a projectile is at its maximum height? 14. What are the units for: distance, velocity, acceleration, force, work, energy, power… 15. An object has a weight of 50 N on the Earth and a second object has a weight of 50 N on the moon. Which has the greater mass? 16. A car ...
Chapter 12 Slides
... viscous forces. • The flow is steady – all particles passing through a point have the same velocity. • The fluid is incompressible – the density of the incompressible fluid remains constant. ...
... viscous forces. • The flow is steady – all particles passing through a point have the same velocity. • The fluid is incompressible – the density of the incompressible fluid remains constant. ...
Chapter 4: Newton`s Second Law of Motion
... Push a bit harder but it still won’t move, the friction increases to exactly oppose it. Called “static friction” since nothing moves. - There is a max. static friction force between any two objects, such that if your push is just greater than this, it will slide. - Then, while it is sliding as you ...
... Push a bit harder but it still won’t move, the friction increases to exactly oppose it. Called “static friction” since nothing moves. - There is a max. static friction force between any two objects, such that if your push is just greater than this, it will slide. - Then, while it is sliding as you ...
Chapter 10.3-10.5
... to move at a constant velocity until a force acts to change either its speed or direction. • Gravity and friction are unbalanced forces that often change an object’s motion. ...
... to move at a constant velocity until a force acts to change either its speed or direction. • Gravity and friction are unbalanced forces that often change an object’s motion. ...
HP Unit 3 - student handout
... Tension forces exist in cables, ropes, wires, strings, etc. The tension force pulls on an object where the direction of the tension is always away from the surface of the object to which the ‘rope’ is attached. ...
... Tension forces exist in cables, ropes, wires, strings, etc. The tension force pulls on an object where the direction of the tension is always away from the surface of the object to which the ‘rope’ is attached. ...
Newton Second Law OK
... on it: the normal force, gravity, and the frictional force. • The normal force is always perpendicular to the surface. • The friction force is parallel to it. • The gravitational force points down. If the object is at rest, the forces are the same except that we use the static frictional force, and ...
... on it: the normal force, gravity, and the frictional force. • The normal force is always perpendicular to the surface. • The friction force is parallel to it. • The gravitational force points down. If the object is at rest, the forces are the same except that we use the static frictional force, and ...
hw2 - forces - Uplift North Hills Prep
... a. In the interaction between an apple and an orange, how many forces are exerted on the apple? On the orange? Are these forces equal in strength? Are these forces opposite in direction? b. Consider the orange system. Do action and reaction forces cancel each other in the orange system? Does the ora ...
... a. In the interaction between an apple and an orange, how many forces are exerted on the apple? On the orange? Are these forces equal in strength? Are these forces opposite in direction? b. Consider the orange system. Do action and reaction forces cancel each other in the orange system? Does the ora ...
“Mu of the Shoe”
... different objects. Concept: When two surfaces of objects are in contact with each other, the force of friction between them depends on the nature of the materials in contact and the normal force. Competency: Construct a free body diagram indicating the magnitude and direction of the forces on an obj ...
... different objects. Concept: When two surfaces of objects are in contact with each other, the force of friction between them depends on the nature of the materials in contact and the normal force. Competency: Construct a free body diagram indicating the magnitude and direction of the forces on an obj ...
During a relay race, runner A runs a certain distance due north and
... resistance, what is the rider's total mechanical energy when he coasts to a height of 1 m above sea level? A 100 J B 2500 J C 2600 J D 40 J ...
... resistance, what is the rider's total mechanical energy when he coasts to a height of 1 m above sea level? A 100 J B 2500 J C 2600 J D 40 J ...
Chemical
... Surface Type: Friction: The rougher the surface, the more contact force. Air friction. ...
... Surface Type: Friction: The rougher the surface, the more contact force. Air friction. ...
Buoyancy
In science, buoyancy (pronunciation: /ˈbɔɪ.ənᵗsi/ or /ˈbuːjənᵗsi/; also known as upthrust) is an upward force exerted by a fluid that opposes the weight of an immersed object. In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid. Thus the pressure at the bottom of a column of fluid is greater than at the top of the column. Similarly, the pressure at the bottom of an object submerged in a fluid is greater than at the top of the object. This pressure difference results in a net upwards force on the object. The magnitude of that force exerted is proportional to that pressure difference, and (as explained by Archimedes' principle) is equivalent to the weight of the fluid that would otherwise occupy the volume of the object, i.e. the displaced fluid.For this reason, an object whose density is greater than that of the fluid in which it is submerged tends to sink. If the object is either less dense than the liquid or is shaped appropriately (as in a boat), the force can keep the object afloat. This can occur only in a reference frame which either has a gravitational field or is accelerating due to a force other than gravity defining a ""downward"" direction (that is, a non-inertial reference frame). In a situation of fluid statics, the net upward buoyancy force is equal to the magnitude of the weight of fluid displaced by the body.The center of buoyancy of an object is the centroid of the displaced volume of fluid.