During a time interval of one second, a ball moves in the +x or -x direction (that is, to the right or the left), and a net force acts on the ball in the +x or -x direction. For each motion listed below, check all the descriptions of net force that could produce that behavior. More than one description may be valid for a particular motion.(b) ball moving to the right at constant speed net force to the right with increasing magnitude net force to the right with decreasing magnitude net force = 0 net force to the right with constant magnitude net force to the left with increasing magnitude net force to the left with decreasing magnitude net force to the left with constant magnitude (c) ball moving to the left at constant speed net force to the right with constant magnitude net force = 0 net force to the left with constant magnitude net force to the right with increasing magnitude net force to the right with decreasing magnitude net force to the left with decreasing magnitude net force to the left with increasing magnitude

A zoologist pulls a block of hay towards an animal enclosure. The zoologist pulls at the angle of 27 degrees above the horizontal with a constant speed of 1 m/s. The mass of the hay is 60 kg and the coefficient of friction between the hay and the concrete is 0.29What is the value of the force F the zoologist is applying?  please include a diagram using coordinate system and vectors, implied values, and known values.

(Figure 1) shows a F = 6.4 N force pushing two gliders along an air track. The 170 g spring between the gliders is compressed. Assume the force Facts and the whole system moves in the same direction. The spring does not sag. Figure F A 400 g m B 600 g 1 of 1 Part A How much force does the spring exert on glider A? Express your answer to two significant figures and include the appropriate units. F = Submit Part B F = O Submit Value Request Answer How much force does the spring exert on glider B? Express your answer to two significant figures and include the appropriate units. μA Value Units Request Answer ? Units ?

The diagram below is a top-down view of two children pulling a 11.6-kg sled along the snow. The first child exerts a force of F1 = 10 N at an angle ?1 = 45° counterclockwise from the positive x direction. The second child exerts a force of F2 = 6 N at an angle ?2 = 30° clockwise from the positive x direction. (A) Find the magnitude (in N) and direction of the friction force acting on the sled if it moves with constant velocity. magnitude = ? direction (counterclockwise from the +x-axis) = ? (B) What is the coefficient of kinetic friction between the sled and the ground? (C) What is the magnitude of the acceleration (in m/s2) of the sled if F1 is doubled and F2 is halved in magnitude?

A runner travels I.5 laps around a circular track in a time of 50 s. The diameter of the track is 40 m and its circumference is 126 m. Find (a) the average speed of the runner and (b) the magnitude of the runner's average velocity. Be careful here; average speed depends on the total distance traveled, whereas average velocity depends on the displacement at the end of the particular journey.

A physics professor is pushed up a ramp inclined upward at an angle 30.0° above the horizontal as he sits in his desk chair that slides on frictionless rollers. Part A The combined mass of the professor and chair is 86.0 kg. He is pushed a distance 2.10 m along the incline by a group of students who together exert a constant horizontal force of 610N. The professor's speed at the bottom of the ramp is 1.85 m/s Use the work-energy theorem to find his speed at the top of the ramp. Express your answer in meters per second. V ΑΣφ ? V = m/s 國

A 2.0 kg object is moving to the right with a speed of 1.0 m/s when it experiences the force shown in the figure. What are the object’s speed and direction after the force ends? Express your answer to two significant figures and include the appropriate units. Enter positive value if the speed is directed to the right and negative value if the speed is directed to the left.

PLEASE ANSWER ALL PARTS ASAP!!!!!

A mass m is at rest on a horizontal frictionless surface at t = 0. Then a constant force Fo acts on it for a time to. Suddenly the force doubles to 2 Fo and remains constant until t = 2to- Part A Determine the total distance traveled from t = 0 to t = 2to- Express your answer in terms of the variables m, Fo, to, and appropriate constants. d = ΓΙ ΑΣΦ ?

You and your friend are moving a 82kg box across the floor at a constant speed.  You are pushing on the crate parallel to the ground with a force of 62N.  Your friend has a rope tied to the box and they are pulling it at an angle of 37° to the ground with a force of 32N. Construct the free body diagram showing the force acting on the crate in order to find the magnitude of friction the floor exerts on the box.