and standing still at a point A. Another point, B, is several meters away and you want to get there. question 1) Can you manage to reach point B if you only take a strong enough rate? Justify the answer briefly (the justification should be based on Newton's laws). 2) Then assume that you take off your hat and stand on it when you make a bet. Can you now manage to get to point B (without a hat)? Justify the answer briefly

and standing still at a point A. Another point, B, is several meters away and you want to get there. question 1) Can you manage to reach point B if you only take a strong enough rate? Justify the answer briefly (the justification should be based on Newton's laws). 2) Then assume that you take off your hat and stand on it when you make a bet. Can you now manage to get to point B (without a hat)? Justify the answer briefly

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter7: Rotational Motion And Gravitation

Section: Chapter Questions

Problem 63AP: A skier starts at rest at the top of a large hemispherical hill (Fig. P7.63). Neglecting friction,...

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In a shuffleboard game, the puck slides a total of 12 m before coming to rest. If the coefficient of kinetic friction between the puck and board is 0.10, what was the initial speed of the puck? Can you point to some formula, why you chose that formula, then explain the factors in the physics dynamics. I don't quite understand.
Three stacked blocks are placed in an elevator as shown: Assume the stack of blocks is in contact with the floor of the elevator. If m = 11.9 kg and the elevator is accelerating upward at 1.9 m/s2, what is the normal force exerted on the 5m block by the 8m block? Express your answer in N, to at least one digit after the decimal point.
A person reaches a maximum height of 56 cm when jumping straight up from a crouched position. During the jump itself, the person's body from the knees up rises a distance of around 50 cm . To keep the calculations simple and yet get a reasonable result, assume that the entire body rises this much during the jump. 1. With what initial speed does the person leave the ground to reach a height of 56 cm? 2.In terms of this jumper's weight W , what force does the ground exert on him or her during the jump?
In the very Dutch sport of Fierljeppen, athletes run up to a long pole and then use it to vault across a canal as shown in (Figure 1). At the very top of his arc, a 70 kg vaulter is moving at 2.9 m/s and is 5.5 m from the bottom end of the pole. What is the magnitude of the vertical force that the pole exerts on the vaulter? Express your answer with the appropriate units.
Review. A block of mass m = 2.00 kg is released from rest at h = 0.500 m above the surface of a table, at the top of a = 30.0 incline as shown in Figure P5.101. The frictionless incline is fixed on a table of height H = 2.00 m. (a) Determine the acceleration of the block as it slides down the incline, (b) What is the velocity of the block as it leaves the incline? (c) How far from the table will the block hit the floor? (d) What time interval elapses between when the block is released and when it hits the floor? (e) Does the mass of the block affect any of the above calculations?
A skier starts at rest at the top of a large hemispherical hill (Fig. P7.63). Neglecting friction, show that the skier will leave the hill and become airborne at a distance h = R/3 below the top of the hill. Hint: At this point, the normal force goes to zero. Figure P7.63
A skier starts at rest at the top of a large hemispherical hill (Fig. P7.63). Neglecting friction, show that the skier will leave the hill and become airborne at a distance h = R/3 below the top of the hill. Hint: At this point, the normal force goes to zero. Figure P7.63
1. A 10-kg body falls from rest, with negligible interaction with its surroundings (no friction). Determine its velocity after it falls 5 m. Derive with the formula below, show the cancellation, explain the step by step and draw a free body diagram/figure. refer with this: PE1 + KE1 + U1 + WF1 + Q1 + W1 = PE2 + KE2 + U2 + WF2 + Q2 + W2 + E losses.
A 10 kg block with an initial velocity of 10 m/s slides 10 meters across a horizontal surface and comes to rest after sliding for 2 seconds. How much force was acting on the block to make it stop? Your answer should be in units of N but you should only submit the number for your answer (and don't worry about negative signs, just submit a positive value).
PLEASE SEND THE ANSER IN 10 MINUTES ! The magnitude of the net force exerted in the negative x direction on a 8.9kg particle varies in time as shown in the Figure below. If initially the velocity of the particle is −6.6m/s along the x axis, determine the final velocity of the particle after the 5.0s interval. Please note that (+) and (−) signs are used to denote positive and negative directions along the x axis! Don't forget to use the correct sign in your answer. Express your answer in units of m/sm/s using one decimal place.
A 1.00-kg glider on a horizontal air track is pulled by a string at an angle θ. The taut string runs over a pulley and is attached to a hanging object of mass 0.500 kg as shown. (a) Show that the speed υx of the glider and the speed υy of the hanging object are related by υx = uυy, where u = z(z2 - h02)-1/2. (b) The glider is released from rest. Show that at that instant the acceleration ax of the glider and the acceleration ay of the hanging object are related byax = uay. (c) Find the tension in the string at the instant the glider is released for h0 = 80.0 cm and θ = 30.0°.
A differential equation describing the velocity v of a mass m in fall subject to an air resistance proportional to the instantaneous speed is m dv/dt=mg-kv, where k is a positive proportionality constant. a) Solve the equation, subject to the initial condition v(0) = v0 b) Calculate the limiting speed of the mass. c) If the distance s is related to the speed by ds/dt = v, derive an equationexplicit for s, if it is also known that s(0) = s0 topic:ORDINARY DIFFERENTIAL EQUATIONS