A skyscraper elevator travels 20 m while reaching its cruising speed of 10m/s. A 82 kg passenger gets a board on the ground floor just as the doors are closing. What is the passengers apparent weight just as the doors close? Note that the passenger is at rest just as the doors close.

Q: A student weighs 200 N. If he is in an elevator that is accelerating upward at 2.00 m/s/s, what will…

A: Given that:-Weight of student=mg=200NUpward acceleration, a=2.00m/s2We know thatApparent weight of a…

Q: A 2-kg body of mass is moving on a horizontal frictionless surface with a velocity of 4 m/s. What is…

A: Mass of body (m) = 2 kg velocity (v) = 4 m/s time (t) = 5 seconds

Q: You are riding in an elevator on the way up to your apartment. The elevator is accelerating upward…

A: Given: Upward acceleration of elevator is 1.2 m/s2 Mass is 30 kg Kinetic friction coefficient is…

Q: A lamp hangs vertically from a cord in a descending elevator that decelerates at 1.9 m/s2. (a) If…

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Q: What is the speed

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Q: A roller coaster have a velocity of 9.5 m/s as it goes thru a loop where R = 6.7 meters.  What…

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Q: Zach, whose mass is 77 kg, is in an elevator descending at 12 m/s. The elevator takes 3.2 s to brake…

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Q: A space traveller weighs herself on Earth at a location where the acceleration due to gravity is…

A: The weight of a person is given by the expression W=mgm is the mass of the substanceg is the…

Q: What is the magnitude of the net force needed to bring a 2085 kg car to rest from 25.6 m/s in 9.3…

A: Solution: Given that mass m= 2085 kg vinitial = 25.6 m/s time t = 9.3 s to find the force required

Q: In the figure, the coefficient of kinetic friction between m1-2.00 kg and the table is u-0.200. The…

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Q: A space explorer weighs 200lb on planet earth. If the explorer weighs 20lb on the surface of a…

A: Required : The acceleration due to gravity on the surface of the asteroid.

Q: weight of this object

A: Given: Gravitational acceleration on surface of planet Neptune is g=11.15 m/s2 Mass of object is…

Q: In a slap shot in hockey, the stick and puck are only in contact for 0.030 s. During this time, the…

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Q: A child’s model boat, when placed in a creek, accelerates from rest at 1.4 m/s2. If the river is…

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Q: You’re in a rocket that’s accelerating through intergalactic space at 5.82 m/s2.  Your mass is 80.0…

A: GIVEN             Mass , m = 80.0 kg            Acceleration , a = 5.82 m/s2           Weight , W =…

Q: At a time when mining asteroids has become feasible, astronauts have connected a line between their…

A: Using Newton's law of motion, the expression for find acceleration of the tug is aT=FmT Substitute…

Q: ength of the barrel, and it exits the barrel with a speed of 730 m/s. Assuming that the acceleration…

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Q: A child’s model boat, when placed in a creek, accelerates from rest at 1.51 m/s2. If the river is…

A: Initial velocity = 0 msAcceleration (a) = 1.51 ms2Force (F) = 0.79 N

Q: A diver with a mass of 110 kg on a high board 10.0m above the water’s surface dives off the board…

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Q: A porch swing is 4 feet long and supported by chains at either end. The swing weighs 52 pounds. A…

A: We will draw the FBD of the system and then use the moment concept at left and right end of the…

Q: You have most likely been in an elevator that accelerates upward as it moves toward a higher floor.…

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Q: Because you wanted space, you woke up on unknown planet. While thinking you dropped a 150-g stone…

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Q: scientists are experimenting with a king of gun that may eventually be used to fire  payloads…

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Q: A small rocket of weight 0.3 lbs is launched vertically with thrust 3 lbs from a stand on the ground…

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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. 1.95 N b. 0.75 N c. 1.00 N

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Q: The net force on block A equals to 47.4 N, and the mass of block A is 14.5 kg.  If at t=0 sec, the…

A: Write the given data with suitable variables. F=47.4 Nm=14.5 kgu=0 m/st=4.8 s Here, F denotes the…

Q: A 821-kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00 s when it…

A: Given: The mass of the car is 821 kg. The initial speed of the car is 0 m/s. The final speed of the…

Q: A 77-kg person is standing on a scale in an elevator. What is the reading of the scale in newtons if…

A: reading of a scale depends upon the force exerted by person on the scale (usually its normal force)…

Q: A 57 kg skier is going down a mountain side, during one particularly steep region their velocity can…

A: Net force =( mass ) (acceleration)  acceleration = time derivative of the velocity

Q: A woman in a lift is trying to weign m/s, and finally decelerates at 1.1 m/s. During the first stage…

A: Given downward accleration ,a=1.7 m/s2costanr speed ,v=3m/sFinaly decelerates at 1.1 m/s2 scale…

Q: A student's backpack, full of textbooks, is hung from a spring scale attached to the ceiling of an…

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Q: A 75 kg astronaut brings a standard bathroom scale with him into space. What does the scale read if…

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Q: When Fatima rides her bicycle at 5 m/s, the drag force acting on her and her bicycle is 6 N. If she…

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Q: A 8.0 x 104 kg spaceship is at rest in deep space. Its thrusters provide a force of 1200 kN. The…

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Q: If you have a mass of 100 kg on the earth and are taken to a planet where the acceleration of…

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Q: A weight hangs on a 1.0 m long rope. How high does it rise if we push it from a resting position at…

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Q: An impala is an African antelope capable of a remarkable vertical leap. In one recorded leap, a 45…

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Q: A 6.0-lb stroller resting on a horizontal floor is pulled by a 85-lb boy with a constant force of…

A: Given mass of stroller ms = 6 lb = 2.72 kg mass of boy mb = 85 lb = 38.56 kg value of Force F = 75…

Q: Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. The scale reads 830 N for the…

A: Apply newton’s second law of motion along the motion of the lift, and substitute 95kg, for m,…

Q: What average force is required to stop a 1800 kg car in 9.0 s if the car is traveling at 90 km/h ?

A: Given: A 1800 kg car traveling at a speed of 90 km/h.

Q: A small rocket of weight 1.7 lbs is launched vertically with thrust 3 lbs from a stand on the ground…

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Q: Zola (the wonder dog) is told to sit and stay on a bathroom scale that reads 150 newtons with her on…

A: Given The Weight of the Zola is W = 150 N. The acceleration at which Zola moves in air is a = 2…

Q: 10 kg block is sitting on a flat friction less surface . earth gravity: (9.8 meters/second 2) moon…

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