Chapters One and Two - elementaryscienceteachers
... which velocity changes…a change in velocity over time. ...
... which velocity changes…a change in velocity over time. ...
Chap4 force practice problems with answers
... 3. Two ropes are attached to a 40.0 kg object. The first rope applies a force of 25.0 N and the second a force of 40.0 N. If the two ropes are perpendicular to each other, what is the resultant acceleration of the object? ...
... 3. Two ropes are attached to a 40.0 kg object. The first rope applies a force of 25.0 N and the second a force of 40.0 N. If the two ropes are perpendicular to each other, what is the resultant acceleration of the object? ...
Newton`s Second Law of Motion Chapter 5 Force and Acceleration
... proportional to the magnitude of the net force, is in the same direction as the net force, and is inversely proportional to the mass of the body.” ...
... proportional to the magnitude of the net force, is in the same direction as the net force, and is inversely proportional to the mass of the body.” ...
21.ForcesReview
... 2. Without friction, if you are coasting (no applied force), your acceleration is ______ and your velocity is _________________. 3. Two horizontal forces, 350 N and 100 N are exerted in the same direction on a crate. Find the net horizontal force on the crate. car using cruise control. ...
... 2. Without friction, if you are coasting (no applied force), your acceleration is ______ and your velocity is _________________. 3. Two horizontal forces, 350 N and 100 N are exerted in the same direction on a crate. Find the net horizontal force on the crate. car using cruise control. ...
Explaining Motion
... Galileo was the first to suggest that constantspeed, straight-line motion was just as natural as at-rest motion. This property of remaining at rest or continuing to move in a straight line at a constant speed is known as inertia. ...
... Galileo was the first to suggest that constantspeed, straight-line motion was just as natural as at-rest motion. This property of remaining at rest or continuing to move in a straight line at a constant speed is known as inertia. ...
Monday, March 2, 2009
... a floor. She stands on a scale that reads in kg. (a) During this acceleration, what is her weight and what does the scale read? (b) What does the scale read when the elevator descends at a constant speed of 2.0m/s? ...
... a floor. She stands on a scale that reads in kg. (a) During this acceleration, what is her weight and what does the scale read? (b) What does the scale read when the elevator descends at a constant speed of 2.0m/s? ...
VOLCANOES AND PLATE TECTONICS
... Calculating Force: Find the force it would take to accelerate an 800 kg car at a rate of 5 m/s2. (*Show all work: Set-up, Substitute, Solve) F= m*a= 800kg* 5m/s2 =4000 N Calculating Force: What is the net force acting on a .15 kg hockey puck accelerating at a rate of 12 m/s2. (*Show all work: Set-up ...
... Calculating Force: Find the force it would take to accelerate an 800 kg car at a rate of 5 m/s2. (*Show all work: Set-up, Substitute, Solve) F= m*a= 800kg* 5m/s2 =4000 N Calculating Force: What is the net force acting on a .15 kg hockey puck accelerating at a rate of 12 m/s2. (*Show all work: Set-up ...
Feathers vs Rocks (pg 45)
... • Mass is the amount of matter (“stuff”) in a substance • Measured with a scale ...
... • Mass is the amount of matter (“stuff”) in a substance • Measured with a scale ...
Forces Test I
... c) is the same for both. 16. A sheet of paper can be withdrawn from under a container of milk without falling over if the paper is jerked quickly. The reason this can be done is that ___. a) the milk carton has no acceleration. c) the gravitational field pulls on the milk carton. b) there is an acti ...
... c) is the same for both. 16. A sheet of paper can be withdrawn from under a container of milk without falling over if the paper is jerked quickly. The reason this can be done is that ___. a) the milk carton has no acceleration. c) the gravitational field pulls on the milk carton. b) there is an acti ...
MOTION
... 1. Explain the following in 1 to 2 lines: Ms. Bell gets upset and pushes Mr. Hill. She also pushes Ms. Hawbaker with the same force. Ms. Hawbaker goes further from the push. 2. What factors can affect force? ...
... 1. Explain the following in 1 to 2 lines: Ms. Bell gets upset and pushes Mr. Hill. She also pushes Ms. Hawbaker with the same force. Ms. Hawbaker goes further from the push. 2. What factors can affect force? ...
Student Learning Goals
... Fnet ma, we prefer to use a because it more explicitly relates the m the independent variables responsible for any change. ...
... Fnet ma, we prefer to use a because it more explicitly relates the m the independent variables responsible for any change. ...
Forces
... • If gravity is exerting a force of 98 Newtons on an object in air, and the acceleration due to gravity is 9.8 m/s2, what is the object’s mass? ...
... • If gravity is exerting a force of 98 Newtons on an object in air, and the acceleration due to gravity is 9.8 m/s2, what is the object’s mass? ...
Force and Acceleration
... Objects continue to be in their state of motion when no forces act on them. This property of the objects to resist any change in their motion is called inertia. The meaning of word inertia is “unchanging”. It comes from the Latin word- inert. For example, when we are traveling in a bus, and bus is g ...
... Objects continue to be in their state of motion when no forces act on them. This property of the objects to resist any change in their motion is called inertia. The meaning of word inertia is “unchanging”. It comes from the Latin word- inert. For example, when we are traveling in a bus, and bus is g ...
Ch 4 Worksheet no Answers
... 5. In a device known as an Atwood machine, a massless, unstretchable rope passes over a frictionless peg. One end of the rope is connected to an object m1 = 1.0 kg while the other end is connected to an object m2 = 2.0 kg. The system is released from rest and the 2.0 kg object accelerates downward w ...
... 5. In a device known as an Atwood machine, a massless, unstretchable rope passes over a frictionless peg. One end of the rope is connected to an object m1 = 1.0 kg while the other end is connected to an object m2 = 2.0 kg. The system is released from rest and the 2.0 kg object accelerates downward w ...
Explaining Motion
... Friction is an unusual force It adjusts its size in response to the situation – up to a limit This limit depends on the objects and the surfaces involved The force of friction arises due to lots of tiny welds that have to be broken as an object slides against another ...
... Friction is an unusual force It adjusts its size in response to the situation – up to a limit This limit depends on the objects and the surfaces involved The force of friction arises due to lots of tiny welds that have to be broken as an object slides against another ...
Monday, Sept. 29, 2008
... Note that the mass and the weight of an object are two different quantities!! Weight of an object is the magnitude of the gravitational force exerted on the object. Not an inherent property of an object!!! Weight will change if you measure on the Earth or on the moon but the mass won’t!! Monday, Sep ...
... Note that the mass and the weight of an object are two different quantities!! Weight of an object is the magnitude of the gravitational force exerted on the object. Not an inherent property of an object!!! Weight will change if you measure on the Earth or on the moon but the mass won’t!! Monday, Sep ...
Cross Products
... 2. Rotate that vector counterclockwise by 90 in the plane perpendicular to u when viewed from the u direction. 3. Multiply that vector by | u |. Note that if u and v point in the same direction then uv is zero. Torque. One application of the cross product is to calculating the torque of a force ac ...
... 2. Rotate that vector counterclockwise by 90 in the plane perpendicular to u when viewed from the u direction. 3. Multiply that vector by | u |. Note that if u and v point in the same direction then uv is zero. Torque. One application of the cross product is to calculating the torque of a force ac ...
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.