A force in the +x-direction with magnitude F(2) = that is sitting on the horizontal, frictionless surface of a frozen lake. F(x) is the only horizontal force on the box. 18.0 N- (0.530 N/m)z is applied to a 6.60 kg box %3D Part A If the box is initially at rest at z = 0, what is its speed after it has traveled 16.0 m ? Express your answer to three significant figures and include the appropriate units. Value Units Reguect Apewer
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- A 149-g baseball is dropped from a tree 15.0 m above the ground. Part A With what speed would it hit the ground if air resistance could be ignored? Express your answer to three significant figures and include the appropriate units. V = Part B for Part A for Part A undo for Part A redo for Part A reset for Part A keyboard shortcuts for Part A help for Part A Submit Value Ffr = If it actually hits the ground with a speed of 7.50 m/s, what is the magnitude of the average force of air resistance exerted on it? Express your answer to three significant figures and include the appropriate units. Units Request Answer Submit for Part B for Part B undo for Part B redo for Part B reset for Part B keyboard shortcuts for Part B help for Part B Value Units Request AnswerA net force along the z-axis that has a-component F₂ = -12.0 N + (0.300 N/m²) x² is applied to a 4.50 kg object that is initially at the origin and moving in the -x- direction with a speed of 8.70 m/s. Part A What is the speed of the object when it reaches the point x = 7.60 m? Express your answer with the appropriate units. _O ī Submit μÀ Value Request Answer Units ?A 4.00kg block moves with an initial speed of3.50 km/h downhillover an inclined plane as shown in the figure. The height of the inclined plane is 51.3cm and the friction coefficient between the block and the incline is 0.120. a.How much is the speed of the block at the midpoint of the inclined side. b.How much is the speed of the block at the bottom of the inclined side.
- (Figure 1) is the force-versus-position graph for a particle moving along the x-axis. Figure Fx (N) 4 2 0 -2 -4 1 2 3 -x (m) ▼ Part A Determine the work done on the particle during the interval 0-1 m. Express your answer with the appropriate units. Wo-1 = Units You have already submitted this answer. Enter a new answer. No credit lost. Try again. Submit Part B ΠΑ W1-2 = Submit Value Previous Answers Request Answer Determine the work done on the particle during the interval 1-2 m. Express your answer with the appropriate units. μA Value Units ? www Previous Answers Request Answer ? Units input for part Bm = 325 kg h1 = 19.5 m h2 = 4.7 m A roller coaster car of mass m is rolling down the track, starting from rest, as shown in the figure. The initial height from the ground is h1 (Position-1), while the final height is h2 (Position-3). The system has no friction. What is the speed of the car when it reaches its final height (Position-3).Using energy considerations, calculate the average force (in N) a 63.0 kg sprinter exerts backward on the track to accelerate from 2.00 to 7.00 m/s in a distance of 25.0 m, if he encounters a headwind that exerts an average force of 30.0 N against him. N Additional Materials O Reading