College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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- How to solve this ?arrow_forwardIn the figure, a 3.9 kg block slides along a track from one level to a higher level after passing through an intermediate valley. The track is frictionless until the block reaches the higher level. There a frictional force stops the block in a distance d. The block's initial speed is vo = 6.0 m/s, the height difference is h = 1.1 m, and uk = 0.560. Find d. Number i Unitsarrow_forwardA 3kg block slides along a floor with coefficient of kinetic friction μk=0.3, initially moving at 7.0m/s. It travels for 2.0 meters, then encounters a ramp sloped upward at 40 degrees. The ramp also has a coefficient of kinetic friction μk=0.3. How fast is the block moving when it reaches the bottom of the ramp? How far up the ramp does the block slide, before momentarily coming to rest? a.) For each part of the problem, identify all the forces acting on the block, and draw a free body diagram. b.) Instead of using a Newton’s 2nd Law equation, write out the Work Energy Theorem for each part of the problem (that is the ΔK = W1 + W2 + … equation.) For both parts of the problem, find thework done by each force on the block and place them on the right-hand side of the equation. (In the ramp part, the magnitude of displacement is unknown, so just leave it as a variable.) c.) Solve for the final velocity in the first part of the problem, then solve for the displacement in the second part of…arrow_forward
- A daredevil on a motorcycle leaves the end of a ramp with a speed of 33.2 m/s as in the figure below. If his speed is 31.0 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance. m A daredevil on a motorcyle is at the end of a ramp that is sloped up to the right. An arrow parallel to the ramp's surface is above the daredevil. A dotted-line path traces the trajectory of the daredevil. The path extends up to the right, initially parallel to the surface of the ramp, and decreases in slope until it reaches a maximum, whereupon it extends down to the right with increasing slope magnitude. The vertical distance between the maximum and the highest point of the ramp is h. A horizontal arrow points to the right above the maximum.arrow_forwardA projectile is fired at an upward angle of 35.0∘from the top of a 145 m cliff with a speed of 165 m/s. Part A What will be its speed when it strikes the ground below? (Use conservation of energy and neglect air resistance.)Express your answer to three significant figures and include the appropriate units.arrow_forwardB3arrow_forward
- a. A 10.0 kg object has an initial velocity of (5.0i + 3.0j) m/s. What is its kinetic energy at this time? KE = ½ mv² where v² = V.Varrow_forwardThe diagram below shows the potential energy U of a particle (in joules) as a function of its position x. 4 D 2 A 1 -1 -2+ B A particle is initially at point B. It is moving to the right, and its total energy is 4 J. Which of the following most accurately describes the motion of the particle? Ignore friction. O The particle will move between A and C indefinitely. O The particle will eventually come to rest at B. O The particle will come to rest at C. O The particle will come to rest at D. O The particle will move past D and continue to the right. O Something else will happen.arrow_forward6. Always begin by writing the general form of an equation. Insert numbers and units. Remember to show all work (and units). Present the solution well organized and clearly. answer should be: |???⃗⃗⃗⃗⃗⃗|=185??/ℎ,?=22.3°,????ℎ ?? ???? just need an explanation on how to get to this.arrow_forward
- A mechanic pushes a 2.60 ✕ 103-kg car from rest to a speed of v, doing 4,950 J of work in the process. During this time, the car moves 22.0 m. Neglecting friction between car and road, find v and the horizontal force exerted on the car. (a) the speed v m/s (b) the horizontal force exerted on the car (Enter the magnitude.) Narrow_forwardA mechanic pushes a 2.20 ✕ 103-kg car from rest to a speed of v, doing 4,650 J of work in the process. During this time, the car moves 27.0 m. Neglecting friction between car and road, find v and the horizontal force exerted on the car. (a) the speed v m/s (b) the horizontal force exerted on the car (Enter the magnitude.) Narrow_forwardA mechanic pushes a 2.40 ✕ 103-kg car from rest to a speed of v, doing 5,340 J of work in the process. During this time, the car moves 26.0 m. Neglecting friction between car and road, find v and the horizontal force exerted on the car. (a) the speed v m/s (b) the horizontal force exerted on the car (Enter the magnitude.) Narrow_forward
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