A ball is released from rest from the twentieth floor of a building. After 1 s, the ball has fallen one floor such that it is directly outside the nineteenth-floor window. The floors are evenly spaced. Assume air resistance is negligible. What is the number of floors the ball would fall in 3 s after it is released from the twentieth floor?

Q: A block slides along a track from one level to a higher level after passing through an intermediate…

A: Given  vo=6.9m/s h=1.1m g=9.8m/s2 μk=0.60 d=?

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A: At maximum point, the potential energy completely converted into kinetic energy. So, the expression…

Q: A skater is trying to perform a jump. her vertical take-off speed is 1.7 m/s. How high is her jump?…

A: given -              vertical take off speed ( u ) = 1.7 m/s = initial speed…

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A:

Q: A student lifts a 1kg object vertically at a velocity of 1 m/s . What is the magnitude of the force…

A: Given Mass of an object is m = 1 kg Acceleration due to gravity is g=9.80 m/s^2

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Q: ou place a crate of mass 39.9 kg on a frictionless 2.08-meter-long incline. You release the crate…

A: Given: The initila speed of the object is 0 m/s. The length of the ramp is 2.08 m. The mass of the…

Q: When a 50-kg person steps on a scale in a moving elevator, the scale reads a steady 490 N. Which one…

A:

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A:

Q: A physics student, in a stationary elevator, places a 210.0 g mass on an electronic balance. The…

A: Given, mass of object = 210 g  Time = 0 to 3.0 sec the balance reads 274 grams  Time = 3.0 - 12 sec…

Q: ation! A motor is used to pull a crate horizontally across the ground at a constant speed of 1.7 m/s…

A: Given, the crate moves with constant velocity, so:& So, net force = 0 N and this is a necessary…

Q: A car accident occurs when a car slides into another car at the base of a hill.  Car A was…

A:

Q: Suppose it takes a force of 4,200 N to acceler to stop it from that same speed in 4.0 s? O 8,400 N O…

A: GivenForce (F)=4200 NTime (t1)  =8.0 s

Q: A stone is thrown straight upward with a speed of 25 m/s. It is caught on its way down at a point 5…

A: The vertical displacement of stone is   y=y_0+v_0t-(1/2)gt^2  5=25t-(1/2)(9.80)t^2 5=25t-4.90t^2 On…

Q: A runaway train with a mass of 500kg is stopped by batman. If it runway train starts with an initial…

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Q: Meter- Gram- Second or (MGS) is an International System (SI) unit 2 |Work is a vector quantity 3 The…

A: 1. False Meter is the international system of unit for distance.  Kilogram is the international…

Q: You are standing on a scale in an elevator. While the elevator is at rest, the scale reads 650 N.…

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Q: 1000-kg car traveling at 70 m/s takes 3 m to stop under full braking. The same car under similar…

A: initial velocity(u)=70 m/s stopping distance(s)=3m final velocity(v)=0 finally stops let a be…

Q: A 1 kg ball and a 2 kg ball, both the same dimensions, are dropped at the same time from a height of…

A: Acceleration due to gravity is independent from the mass of object so for Both object if we apply…

Q: A 6.0 kg object is projected directly upward with an initial speed of 15 m/s. This object…

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Q: A block slides down a frictionless inclined ramp. If the ramp angle is 19.0° and the length of it is…

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Q: rier with a mass of 9.38 kg to the bungie cord and let the dog drop. The cord is 100 m long when…

A: The spring constant k = 48.1 N/m  You attach a somewhat nervous Boston Terrier with a mass of m =…

Q: 2. A 1.5-kg box is released from rest on a frictionless surface that is sloped at 0 = 35° above the…

A: GivenMass of box ,m=1.5 kgAngle ,θ=35°Sliding plane is 1 m longμk=0.12

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Q: A water slide is constructed so that swimmers, starting from rest at the top of the slide, leave the…

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Q: A boy tosses a coin straight up to 2.2 m. Suppose the height when the coin leaves his hand is 1.3 m.…

A: Initial height of the coin in boy's hand = 1.3 m The height of the coin when it tosses = 2.2 m The…

Q: A block is sliding along a frictionless surface at 19.1 m/s. The block slides down a hill. At the…

A: Given value--- Initial speed u=19.1m/s Final speed v=37.1 m/s We have to find--- How tall (in…

Q: A 2.0 kg wood block is launched up a wooden ramp that is inclined at a 30° angle. The block’s…

A:

Q: Problems, Section 9 number,10,11. Please answer the questions

A: Solving part 10:

Q: the normal force that you experience

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Q: 7. A roller coaster reaches the top of the steepest hill with a speed of 6.80 km/h. It then descends…

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Q: In the rollercoaster shown in the figure, the height of the first hill is 24.5 meters, and the…

A: Write the given values with suitable variables. h1=24.5 mh2=12.8 mv2=20.4 m/s Here, v2 is the…

Q: A cyclist coasts up a 10.0 degree slope, traveling 20.0 m along the road to the top of the hill. If…

A: Given:Initial speed,  u= 9.00 m/sAngle,  θ = 100Distance  d = 20 m