A 45.0-kg person steps on a scale in an elevator. The scale reads 430 N. What is the acceleration of the elevator? We choose +y upward. 9.80 m/s 2 -0.244 m/s 2 -0.422 m/s 2 0.422 m/s 2 0.244 m/s 2

Q: A box rests on a horizontal surface. You apply a force on the box of F = 100 N at an angle, θ, below…

A:

Q: The child pulls the sled up a hill. The hill is inclined at an angle of 10º. The sled has a mass of…

A: θ = 10om = 8 kg a = 0.28 ms2The tension in the rope = T

Q: As a bullet is fired from the barrel of a gun, it accelerates due to the expanding gases in the…

A:

Q: A crate (20 kg) is hung in an elevator by a cord rated to withstand a tension of 300 N. The elevator…

A: Consider the free body diagram of the system.

Q: An object with a mass of 6.0 kg accelerates 4.0 m/s? when an unknown force is applied to it. What is…

A: Given Data:   m = 6 kg a = 4 m/sec2

Q: An Object with a mass of 6.2 kg accelerates 12.3 m/s2 when an unknown force is applied to it. What…

A: Given value--- mass = 6.2 kg. acceleration = 12.3 m/s2  . We have to find--- force ?

Q: Length of an inclined track is l = 2 m, height h = 7 cm, gravitational acceleration is g = 980 cm/s2…

A:

Q: Moments after making the dreaded decision to jump out the door of the airplane, a skydiver's 86.4-kg…

A: Given data: Mass (m) = 86.4 kg Force due to air resistance (Fair) = 121 N Acceleration due to…

Q: What is the expected value of acceleration of a car (in m/s2) on a frictionless track that is…

A: Given:  Inclined angle of track = 5° Let mass of car = m

Q: 48. John fires a projectile in a Uwindsor lab and notes that the 20.0g projectile travels 785 m/s.…

A: John fire a projectile and note that the20 gram projectile penentrate the clay ball. We need to find…

Q: brenda pushes a box horizontally with a force of 200 N (F=200N).  The mass of the box is 50 kg.…

A:

Q: A 151 kg crate is placed on an adjustable inclined plane. If the crate slides down the incline with…

A:

Q: Zach, whose mass is 80 kg, is in an elevator going up at 6.0 m/s. The elevator takes 2.0 s to stop…

A: Zach is going upward in the elevator, with a constant speed. Eventually the elevator stops at the…

Q: 6. Consider the system shown in the figure. Block A weighs 45.0 N and block B weighs 25.ON. Once…

A: Given data: Weight of block A ( WA )= 45 N Weight of block B ( WB )  = 25 N Weight of cat Wcat = 45…

Q: A box is placed in an inclined plane with an elevation of 46.8°. What is the acceleration of the…

A: Notice that in the given question, nothing is mentioned about the friction, therefore, it needs to…

Q: A child is rolling a ball down a slide to his friend. The ball has a mass of 3 kg, and the slope of…

A:

Q: Two forces act on a 2.90 kg object, the gravitational force and a second, constant force. The object…

A: Mass of the object m = 2.90 kgAfter 1.20 s the displacement r→=4.1i^−3.3j^The initial velocity of…

Q: A 39.0-kg child steps on a scale in an elevator. The scale reads 420 N. What is the magnitude of the…

A: Given: Mass of the child m is: 39.0 kg Reading of force on the scale is 420 N. Formula Used: The…

Q: 4.0 kg block rests at the edge of a platform that is 20 m above level ground.  The block is launched…

A: Given Initial vertical displacement is y0=20 m Final vertical displacement is y=0 Initial vertical…

Q: A dog is pulling a 65 kg sled up a hill inclined at 20 degrees above the horizon. The dog pulls with…

A: Given Datam=65kgθ1=20°θ2=29°P=465Nf=75NTo find a=?

Q: On planet X, a 5.0 X 101 kg bar can be lifted with a force of just 180 N. a. What is the…

A: Mass of bar = 50 kg  Force required to lift a bar = 180 N

Q: Pulling up on a rope, you lift a 9.42-kg bucket of water from a well with an acceleration of 2.20…

A: Mass of bucket (m) = 9.42 kg Acceleration of the bucket in upwards direction (a) = 2.20 ms2

Q: An astronaut’s weight on earth is 800 N. What is his weight on Mars, where g = 3.76 m/s2?

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Q: Two ropes are attached to a 40 kg object.  The rope with a 50 N force points along a direction 43…

A: Given:- The mass of the object m = 40 kg   The rope with a 50 N force points along a direction 43…

Q: 42. John is moving a 14 kg box in a Phsyics lab on an approximately frictionless surface. If the box…

A:

Q: 1. A proton of mass 1.67 x 10-27 kg is initially at rest. It then moves through 1.80 cm along a…

A:

Q: You lift a 7.27-kg bucket of water from a well by pulling on a rope.  You give the bucket an…

A:

Q: What is the magnitude

A: 0.346 m/s2

Q: An elevator technician weighs 160 lbs in an elevator which is at rest. When the elevator moves up at…

A: The rest weight of the technician is given as, W=N=160 lbs, The weight of the technician with…

Q: A block of mass 22 kg moves up a 32 degree inclined plane by being pulled by a string attached to a…

A:

Q: Eloisa stands on a bathroom scale in a n elevator that is not moving. The scale reads 475 N. The…

A: Given  Acceleration of elevator is a=0    since moving with constant velocity.  Weight is w=475N

Q: determine the man's upward acceleration. Use g = 9.80 Question 15. A person whose weight is 519 N is…

A:

Q: A 60 kg person stands on a bathroom scale in an elevator. What does the scale read when the elevator…

A: Given:-  The mass of the object is m = 60 kg. it is on the elevator  Find:-  a) what does the scale…

Q: Zach, whose mass is 80 kg, is in an elevator going down at 6.0 m/s. The elevator takes 2.0 s to stop…

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Q: A person whose weight is 508 N is being pulled up vertically by a rope from the bottom of a cave…

A:

Q: The coefficient of kinetic friction between the box and the ramp is 0.15, the mass is 25.4 kg, and…

A: Given data *The given mass of the box is m = 25.4 kg *The angle is θ=150 *The coefficient of kinetic…

Q: An astronaut's weight on earth is 800 N. What is his weight on Mars, where g=3.76m/s2?

A:

Q: A very heavy chain with four links is hanging from an elevator. Each link has mass = 1kg the…

A:

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”