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A: Given: v = 260 km/h W = W W' = W + 0.1 W = 1.1 W
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A: as per our guidelines we are supposed to answer only one question. Kindly repost other question as…
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A: Given Data Coefficient of kinetic friction is given as μk=0.2 Initial velocity of the box is v0=4…
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A: Given: Height from which rock is dropped h=20 m Initial speed of rock is, u=0 Apply the kinematics…
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A: Given Weight of ball is W=20 N Initial speed is v_0=20 m/s At the height point, the velocity of the…
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A: Introduction: Here, the constant velocity of the elevator downward so the acceleration of the…
Q: There are nine books in a stack, each with a weight of 5.5 N. The coefficient of friction between…
A: Given that - Weight of each books Coefficient between the table and bottom book.
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Q: There are nine books in a stack, each with a weight of 1.1 N. The coefficient of friction between…
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A: Given data: Constant speed =v Constant horizontal force=f The kinetic coefficient of friction is…
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Q: A ship of mass 3 x 10'kg and initially ai rest can be pulled through a distance of 3 m by means of a…
A: Given, Mass=3×10^7kg Distance=3m Force=5×10^4N
Q: A body weighing 40 lb starts from rest and slides down a plane at an angle of 30° with the…
A: 1) The net force exerted on the body positioned is, Wsinθ=Wga+μNWsinθ=Wga+μWcosθsinθ=ag+μcosθ…
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A: Acceleration of the car, Initial speed of the car, Time taken,
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Q: When a mass of body tending to move on a rough surface, a counter-acting force is produced against…
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
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A: There is a small difference in the term apparent weight and the actual weight of the body. The…
Q: . You are inside an elevator that is descending with decreasing speed, i.e., the elevator is…
A: (a) greater The apparent weight is if elevator going downwards and slowing down: N = mg + m|a|.…
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A: Given data: Initial velocity (u) = 90 km/h Final velocity (v) = 0 Coefficient of kinetic friction…
Q: A 10 kg object is released at the top of a building 100 m high, If the force of air resistance is on…
A: Given m=mass of object=10Kg h=height=100m Fair=air resistance=30N
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A: Initial speed of the elevator,(u)=0 m/sec ----(1) [Initially at rest] The final speed of the…
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A: Given data: Mass (m) = 1600 kg Initial velocity (u) = 0 m/s Final velocity (v) = 30 m/s Distance…
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A: The total mechanical energy of the car must be conserved. Take the initial point as the starting…
Q: A 1.0 kg rock is thrown upward with an initial speed of 20 m/s. Assuming no air resistance, the net…
A: mass = 1 kg initial speed = 20 m/s At the instant when it reaches the maximum height , the net force…
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A: Find the boat velocity. a=dvdt-0.05v2=dvdt-0.05dt=dvv2 Integrate the above relation.…
Q: A box is given a push so that it slides across the floor. What will be its initial speed, given that…
A: Co-efficient of kinetic friction = 0.20 Displacement of the box = 5.2 m From the problem we derive…
Q: A box is sliding along a slippery, horizontal floor at a constant speed of 5.0 m/s. It encounters a…
A:
Q: A skier of mass 65.0 kgkg is pulled up a snow-covered slope at constant speed by a tow rope that is…
A: Step 1It is given that
Q: A box weighing 48 N is given a downward velocity of 16 m/s on an inclined plane whose slope is 24/7.…
A: GIven: Weight of the box = mg = 48N Inital velocity of the block = 16 m/s (downward) Slope of the…
Q: A body weighing 40 lb starts from rest and slides down a plane at an angle of 30° with the…
A: Weight of the body W=40 lb Angle of inclination θ=30o Coefficient of friction μ=0.3 Acceleration due…
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A: Given m=1000kg v=24m/s u=0.80 We have to find how long will the skid marks be? Your answer is…
Q: A 10.0-kg box is pulled along a horizontal surface by a force of 40.0 N applied at a 30.0° angle…
A: Given Data : The mass of the box is given as m = 10 Kg. The force applied to the box is given as F =…
How much time does it take for a rock dropped from a cliff to fall 180 meters? Assume no air drag.
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- The mass of a roller-coaster car, including its passengers, is 500 kg. Its speed at the bottom of the track in Figure P6.16 is 19 m/s. The radius of this section of the track is r1 = 25 m. Find the force that a seat in the roller-coaster car exerts on a 50-kg passenger at the lowest point.You are a good tree climber and were helping your neighbor kid retrieve his pickle ball that was stuck on a tree branch. You estimated the ball is about 5 m above the ground. Once you climbed high enough, you retrieved the ball and tossed it downward at about 2 m/s downward. How long did the kid have to dodge before the ball hits the ground? You can assume the final position to be zero. The pickle ball has negligible amount of air drag. Hint: the ball has a downward initial velocity.Suppose a small cannonball is shot vertically upward with an initial velocity of 200 ft/s. Assume that air resistance is proportional to velocity, and that the drag coefficient is p = 0.01. How long does it take the cannonball to reach its maximum height?
- A 1-kg ball and a 10-kg ball are dropped from a height of 10 m at the same time. In the absence of air resistance, the 10 kg ball will take 10 times the amount of time to reach the ground. the 1 kg ball will hit the ground first. the 10 kg ball will hit the ground first. the two balls will hit the ground at the same time.q6 A 1 kg ball and a 2 kg ball, both the same dimensions, are dropped at the same time from a height of 20 m. Ignoring air resistance, which ball hits the ground first (if any) and why?An airplane in flight is subject to an air resistance force proportional to the square of its speed v. But there is an additional resistive force because the airplane has wings. Air flowing over the wings is pushed down and slightly forward, so from Newton’s third law the air exerts a force on the wings and airplane that is up and slightly backward. The upward force is the lift force that keeps the airplane aloft, and the backward force is called induced drag. At flying speeds, induced drag is inversely proportional to v 2 , so that the total air resistance force can be expressed by Fair = av2 + b/v2 where a and b are positive constants that depend on the shape and size of the airplane and the density of the air. For a Cessna 150, a small single-engine airplane, a = 0.30 N.s2 /m2 and b = 3.5×105 N.m2 /s 2 . In steady flight, the engine must provide a forward force that exactly balances the air resistance force. 1. Calculate the speed (in km/h) at which this airplane will have the…
- A child of mass 26 kg , is sliding down a water-slide that has an angle of 32 deg. If the water lubricates the slide to a frictionless surface, and the slide is 9 meters long. What is the child's velocity at the bottom?A 2 kg box is put on the surface of an inclined plane at 27 degrees with the horizontal. The kinetic coefficient of friction is μ = 0.3. If released from rest at a height of 3 meters, how long would it take the box to reach the bottom?A skier slides down a hill in a straight line. The hill is 60m high and the coefficient of kinetic friction between the snow and the skis is 0.1. The hill is at an angle of 10 degrees with the horizontal. The mass of the skier is 70 kg. If the skier starts her run from rest and air friction can be ignored, how fast is she moving at the bottom of the hill? Please answer in units of m/s.
- A 70 kg bicyclist is coasting down a long hill with a 3.5° slope. He’s moving quite rapidly, so air drag is important. His cross-section area is 0.32 m2 and his drag coefficient is 0.88. What speed does he eventually reach, in mph?A cannonball is fired straight up into the air. The cannonball leaves the cannon at a speed of 81 m/s. Determine how high the cannonball goes and how long it took to reach the peak. Ignore air drag. Max height = ? Time = ?You drive an automobile of mass 2.10 x 103 kg from sea level to the top of a mountain 2.05 km high. What is its change in weight?
