Quiz __
... following statements best explains this observation? a. The person’s mass increased initially. b. The elevator underwent negative acceleration. c. The velocity of the elevator increased while motion was in the positive direction. d. The velocity of the elevator decreased while motion was in the nega ...
... following statements best explains this observation? a. The person’s mass increased initially. b. The elevator underwent negative acceleration. c. The velocity of the elevator increased while motion was in the positive direction. d. The velocity of the elevator decreased while motion was in the nega ...
Sects. 5.3 through 5.4
... Consider an object on which the net force is a resistive force proportional to the square of its speed. For example, assume that the resistive force acting on a speed skater is f = –kmv2, where k is a constant and m is the skater’s mass. The skater crosses the finish line of a straightline race with ...
... Consider an object on which the net force is a resistive force proportional to the square of its speed. For example, assume that the resistive force acting on a speed skater is f = –kmv2, where k is a constant and m is the skater’s mass. The skater crosses the finish line of a straightline race with ...
ch. 5 and 6 - Cobb Learning
... When a mover puts furniture on wheels, which type of friction is the mover using to make the job easier? a. static friction ...
... When a mover puts furniture on wheels, which type of friction is the mover using to make the job easier? a. static friction ...
Friction and Gravity
... float in the sky. Thanks to gravity, however, they receive a thrilling adventure as they fall to Earth. ...
... float in the sky. Thanks to gravity, however, they receive a thrilling adventure as they fall to Earth. ...
Reveiw PPT 2_Graphs and Equilibrium Forces
... 1st Law: Law of inertia ▫ An object at rest will stay at rest unless acted on by an outside force ▫ An object in motion will stay in motion unless acted on by an outside force. ▫ Inertia: The amount of mass an object has ▫ More inertia = more mass = Harder to move ...
... 1st Law: Law of inertia ▫ An object at rest will stay at rest unless acted on by an outside force ▫ An object in motion will stay in motion unless acted on by an outside force. ▫ Inertia: The amount of mass an object has ▫ More inertia = more mass = Harder to move ...
Goal #2 – Motion and Forces
... If the net force on the object is zero, then all the forces are balanced, and the object will not change its motion. (3rd Law) When one object exerts a force on another object, the second object exerts an equal but opposite force on the first object. (Action-reaction) As an object falls freely, if w ...
... If the net force on the object is zero, then all the forces are balanced, and the object will not change its motion. (3rd Law) When one object exerts a force on another object, the second object exerts an equal but opposite force on the first object. (Action-reaction) As an object falls freely, if w ...
Document
... Now he opens his parachute: 4) When he opens his parachute the air resistance suddenly ________, causing him to start _____ ____. ...
... Now he opens his parachute: 4) When he opens his parachute the air resistance suddenly ________, causing him to start _____ ____. ...
04_3-4_4 answers
... 6. A bug flying east at 5 m/s hits the windshield of a car moving west at 20 m/s. (He won’t have the guts to do that again!) Which experiences the greater impact force, the bug or the windshield? Which experiences the greater acceleration? Why? ...
... 6. A bug flying east at 5 m/s hits the windshield of a car moving west at 20 m/s. (He won’t have the guts to do that again!) Which experiences the greater impact force, the bug or the windshield? Which experiences the greater acceleration? Why? ...
Forces
... • If you hit a tennis ball with a racquet, the force on the ball due to the racquet is the same as the force on the racquet due to the ball, except in the opposite direction. • If you drop an apple, the Earth pulls on the apple just as hard as the apple pulls on the Earth. • If you fire a rifle, the ...
... • If you hit a tennis ball with a racquet, the force on the ball due to the racquet is the same as the force on the racquet due to the ball, except in the opposite direction. • If you drop an apple, the Earth pulls on the apple just as hard as the apple pulls on the Earth. • If you fire a rifle, the ...
Forces, F=ma, weight, FBD`s
... The weight of a body of mass m near the Earth’s surface can be expressed by W=mg. The gravitational force between two objects of mass m1 and m2 , separated by a distance r, is given by ...
... The weight of a body of mass m near the Earth’s surface can be expressed by W=mg. The gravitational force between two objects of mass m1 and m2 , separated by a distance r, is given by ...
05 Study Guide
... Make surfaces that rub against each other smoother Switch to rolling kinetic friction ...
... Make surfaces that rub against each other smoother Switch to rolling kinetic friction ...
Motion and Forces Review Sheet
... a. Person A: a person in a plane sees a court move beneath them b. Person B: a person on a court sees a plane move above them c. Both 15. An object having more friction can be caused by: a. Greater mass ...
... a. Person A: a person in a plane sees a court move beneath them b. Person B: a person on a court sees a plane move above them c. Both 15. An object having more friction can be caused by: a. Greater mass ...
Free fall
In Newtonian physics, free fall is any motion of a body where its weight is the only force acting upon it. In the context of general relativity, where gravitation is reduced to a space-time curvature, a body in free fall has no force acting on it and it moves along a geodesic. The present article only concerns itself with free fall in the Newtonian domain.An object in the technical sense of free fall may not necessarily be falling down in the usual sense of the term. An object moving upwards would not normally be considered to be falling, but if it is subject to the force of gravity only, it is said to be in free fall. The moon is thus in free fall.In a uniform gravitational field, in the absence of any other forces, gravitation acts on each part of the body equally and this is weightlessness, a condition that also occurs when the gravitational field is zero (such as when far away from any gravitating body). A body in free fall experiences ""0 g"".The term ""free fall"" is often used more loosely than in the strict sense defined above. Thus, falling through an atmosphere without a deployed parachute, or lifting device, is also often referred to as free fall. The aerodynamic drag forces in such situations prevent them from producing full weightlessness, and thus a skydiver's ""free fall"" after reaching terminal velocity produces the sensation of the body's weight being supported on a cushion of air.