Exam # 3 Fall 2009
... 3.) Under what conditions is momentum conserved? (in a closed, isolated system) 4.) An astronaut at rest fires a thruster pistol emitting xenon gas. Upon firing the astronaut will ___________.(move in the opposite direction of the gas.) 7.) A 40.0 kg ice-skater glides with a speed of 2.0 m/s toward ...
... 3.) Under what conditions is momentum conserved? (in a closed, isolated system) 4.) An astronaut at rest fires a thruster pistol emitting xenon gas. Upon firing the astronaut will ___________.(move in the opposite direction of the gas.) 7.) A 40.0 kg ice-skater glides with a speed of 2.0 m/s toward ...
Work, Power Potential energy
... Stored energy due to height in a gravitational field: G.P.E. or U = mgh where m is mass (kg) and h is height above the origin level (m). The origin position (h = 0) can be freely chosen U is always relative to some reference level or position. Example: A 1.0 kg mass is held 10 m above the ground. Fi ...
... Stored energy due to height in a gravitational field: G.P.E. or U = mgh where m is mass (kg) and h is height above the origin level (m). The origin position (h = 0) can be freely chosen U is always relative to some reference level or position. Example: A 1.0 kg mass is held 10 m above the ground. Fi ...
1st term exam solutions
... You first apply a horizontal force to drag a box across a floor. If instead you apply a force of the same magnitude but an angle above the horizontal, does the force of kinetic friction a. become greater b. become smaller c. remain the same d. none of the above ...
... You first apply a horizontal force to drag a box across a floor. If instead you apply a force of the same magnitude but an angle above the horizontal, does the force of kinetic friction a. become greater b. become smaller c. remain the same d. none of the above ...
Lecture 16 - Circular Motion
... Newton knew that at the surface of the earth bodies (apples) fall 5 m in the first second, and that this acceleration is due to earth’s gravity. He showed that the gravity force is the same as if all earth’s mass were at its center, 4000 mi from the surface. (This required inventing Calculus). He wo ...
... Newton knew that at the surface of the earth bodies (apples) fall 5 m in the first second, and that this acceleration is due to earth’s gravity. He showed that the gravity force is the same as if all earth’s mass were at its center, 4000 mi from the surface. (This required inventing Calculus). He wo ...
Chapter 8 Motion and Forces - Mrs. Cavanaugh's PbWiki
... • Mass and distance • The greater the mass of an object=the larger the gravitational force it exerts on the other. • If the distance between two objects is doubled, the gravitational force bewteen them decreases to ¼ its original value • If the distance is tripled, the gravitational force decreases ...
... • Mass and distance • The greater the mass of an object=the larger the gravitational force it exerts on the other. • If the distance between two objects is doubled, the gravitational force bewteen them decreases to ¼ its original value • If the distance is tripled, the gravitational force decreases ...
Student Learning Goals
... 1. The amount by which the forces acting on an object are unbalanced is called the net force. 2. When the forces acting on an object are unbalanced, the object will accelerate. Because acceleration is a change in velocity, and velocity includes both speed and direction, a net force will change the s ...
... 1. The amount by which the forces acting on an object are unbalanced is called the net force. 2. When the forces acting on an object are unbalanced, the object will accelerate. Because acceleration is a change in velocity, and velocity includes both speed and direction, a net force will change the s ...
ACTIVITY: Objective 1: Identifying Common Simple and Compound
... refer to this outward force as ___________________________ force. Centrifugal means __________________________________ or away from the center. When the string breaks, the whirling can moves in a __________________, tangent to—NOT _____________________ from the center of—its circular path. The pictu ...
... refer to this outward force as ___________________________ force. Centrifugal means __________________________________ or away from the center. When the string breaks, the whirling can moves in a __________________, tangent to—NOT _____________________ from the center of—its circular path. The pictu ...
Work and energy
... Up to this point we have learned Kinematics and Newton's Laws. Let 's see what happens when we apply BOTH to our new formula for WORK! 1. We will start by applying Newton's second law! 2. Using Kinematic #3! 3. An interesting term appears called KINETIC ENERGY or the ENERGY OF MOTION! ...
... Up to this point we have learned Kinematics and Newton's Laws. Let 's see what happens when we apply BOTH to our new formula for WORK! 1. We will start by applying Newton's second law! 2. Using Kinematic #3! 3. An interesting term appears called KINETIC ENERGY or the ENERGY OF MOTION! ...
Document
... 16. A crate is pulled across a horizontal floor by a rope. At the same time, the crate pulls back on the rope, in accord with Newton’s third law. Does the work done on the crate by the rope then equal zero? Explain. 17. On a slide a child has potential energy that decreases by 100 J while her kineti ...
... 16. A crate is pulled across a horizontal floor by a rope. At the same time, the crate pulls back on the rope, in accord with Newton’s third law. Does the work done on the crate by the rope then equal zero? Explain. 17. On a slide a child has potential energy that decreases by 100 J while her kineti ...
Physics/Graphing Notes
... starting, stopping, or changing directions inertia must be overcome in order to change the motion of the object. This is why inertia is newton’s first law of motion. Newton’s 2nd Law of Motion: Force = Mass x Acceleration Example: It takes more force to move a bus than a smart car, because the bus h ...
... starting, stopping, or changing directions inertia must be overcome in order to change the motion of the object. This is why inertia is newton’s first law of motion. Newton’s 2nd Law of Motion: Force = Mass x Acceleration Example: It takes more force to move a bus than a smart car, because the bus h ...
FE6
... Demonstration: Measurement of weight in a lift A body is weighed in a lift. (This problem was described in Q2.10, FE2, where a fixed frame of reference, outside the lift, was used.) If the frame of reference is attached to the accelerating lift, then the forces on the body being weighed are the grav ...
... Demonstration: Measurement of weight in a lift A body is weighed in a lift. (This problem was described in Q2.10, FE2, where a fixed frame of reference, outside the lift, was used.) If the frame of reference is attached to the accelerating lift, then the forces on the body being weighed are the grav ...
Collisions in 1- and 2-D Outline Energies from Binary Star
... moving at a speed of 15 km/hr. collides with a parked truck of mass 9M, Now what happens? • A. The car stops, and the truck moves off in the same direction. • B. Both vehicles move on in the same direction, but the car is slower. • C. The car rebounds and moves backward, and the truck moves more slo ...
... moving at a speed of 15 km/hr. collides with a parked truck of mass 9M, Now what happens? • A. The car stops, and the truck moves off in the same direction. • B. Both vehicles move on in the same direction, but the car is slower. • C. The car rebounds and moves backward, and the truck moves more slo ...
1 - alcdsb
... A 930 kg piano needs to be moved into an auditorium for a concert. An applied force moves the piano from rest to 0.800 m/s [forward] in 6.00 s. a) Calculate the acceleration of the piano. b) Determine the force of friction that is opposing the motion of the piano. The coefficient of friction between ...
... A 930 kg piano needs to be moved into an auditorium for a concert. An applied force moves the piano from rest to 0.800 m/s [forward] in 6.00 s. a) Calculate the acceleration of the piano. b) Determine the force of friction that is opposing the motion of the piano. The coefficient of friction between ...
Hunting oscillation
Hunting oscillation is a self-oscillation, usually unwanted, about an equilibrium. The expression came into use in the 19th century and describes how a system ""hunts"" for equilibrium. The expression is used to describe phenomena in such diverse fields as electronics, aviation, biology, and railway engineering.