Textbook content produced by OpenStax is licensed under a Creative Commons Attribution License. We recommend using aĪuthors: William Moebs, Samuel J. Use the information below to generate a citation. Question 1: You push with a 20-N horizontal force on a 2-kg mass resting on a horizontal surface against a horizontal frictional force of 12N. Then you must include on every digital page view the following attribution: If you are redistributing all or part of this book in a digital format, Then you must include on every physical page the following attribution: If you are redistributing all or part of this book in a print format, newtons, what is the magnitude of the crate’s acceleration answer choices 0.50 m/s 2 3.5 m/s 2 3.0 m/s 2 4.0 m/s 2 Question 2 120 seconds Q. If the frictional force on the crate has a magnitude of 10. newtons is applied to a 20.-kilogram crate moving toward the east on a level floor. At the bottom of the flight, just before hitting the ground, the velocity will once again be 32 m/s.Want to cite, share, or modify this book? This book uses the A constant eastward horizontal force of 70. use velocity equation v2 vo2+2a (x-xo ) this will give acceleration use second law to find force fw+ma w is mg 6- Two forces are applied to a car in an effort to move it, as shown in the figure below. The total time in the air is 2(3.26 s) = 6.52 s. mass of 0.15 kg, find the force he exerts on the ball to give it this upward speed. The downward time is calculated using the same distance and the same acceleration, so the time will be the same. declination and horizontal force, on the assumption that the forces. A 10.0 kg block on a smooth horizontal surface is acted upon by two forces: a horizontal force of 70 N acting to the left and a horizontal force of 30 N to the right. If the bock is pulled by applying a force of magnitude F 5 mg at an angle 37 with horizontal. It's not crucial in this case, but it does give us the right sign when we calculate time. A particle is moving eastward with a speed of 20 m/s. If a car is traveling eastward, can its acceleration be westward Explain. Consider the collisions between a car and a truck whose weight is much heavier than the car (M m). If the frictional force on the crate has a magnitude of 10 newtons, what is the magnitude of the crate's acceleration A) 0 m/s2 B) 1.3 m/s2 C)5.0 m/s2D) 10. what is the magnitude of the normal force between the ramp and the. 17.A constant eastward horizontal force of 70 newtons is applied to a 20 -kilogram crate moving toward the east on a level floor. Find the magnitude of the applied force F. Notice that we wrote the downward acceleration vector as negative. A 115.0 kg box is pushed by a horizontal force F at constant speed up a frictionless ramp which makes an angle of 46.0 deg with the horizontal. A trapeze artist, with swing, weighs 800 N. The only unknown (thanks to the fact that v f = 0) is the time, so we can calculate it. equilibrium, what is the horizontal force being applied by the partner a. The acceleration is 9.8 m/s 2 downward, so we can write an acceleration equation: On the upward leg, the initial velocity is 27 m/s, and the final velocity is 0 m/s (giving us an average velocity of 13.5 m/s). That fact alone is what allows us to be able to solve problems like this. Second, the velocity at the very top of the trajectory is zero, just before the ball begins its downward trip. That downward acceleration is slowing the ball on its way up and speeding it up on its way down. First, once a projectile (the ball) is released from whatever force launches it, there is no more upward acceleration at all any remaining acceleration is the downward acceleration of gravity, which we call g ( g = 9.8 m/s 2). newtons is applied to a 20.-kilogram crate moving toward the east on a level floor.If the. Solution: There are a couple of important things to realize about a problem like this. Find an answer to your question A constant eastward horizontal force of 70. The figure below breaks the problem up into two "legs," upward and downward, and organizes what we know and don't know.
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