A 5kg box is sitting on a floor. a. What is the box’s mass? b. What is the box’s weight? c. What is the normal force acting on the box?

Q: A 100 N object is suspended from two massless ropes that are attached to the ceiling. The rope to…

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Q: 1. Solve the following problems. a) What is the mass of a book that weighs 3 N at a location where g…

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Q: A car of mass 1600 kg begins to roll down a hill which is inclined at 15 degrees from the ground.…

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Q: A tractor is speeding up at 2 m/s/s while pulling a 1,371 kg sled with a rope at an angle of 28…

A: Given  Mass of sled.M = 1371 kg  Friction between sled and ground = 0.3 =u  Acceleration =a = 2m/s2…

Q: (a) What is the force of gravity between two 1000-kg cars separated by a distance of 25 m on an…

A: Here, M1 = M2 = 1000 kg R = 25 m

Q: Q27. How much force is required to change the velocity of a body of mass 1 kg moving from 20 m/s to…

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Q: An astronaut on the moon places a package on a scale and finds its weight to be 13 N. (a) What…

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Q: Christmas light hangs on a series of strings as shown in the figure below. The tension on string ?,…

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Q: A man sits in a seat that is hanging from a rope. The rope passes over a pulley suspended from the…

A: According to the condition of equilibrium, the net or algebraic sum of all forces and moment about a…

Q: In short-track speed skating, the track has straight sections and semicircles 16 m in diameter.…

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Q: Mary applies a force of 75 N to push a box with an acceleration of 0.43 m/s?. When she increases the…

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Q: An astronaut on the surface of Mars finds that a rock accelerates at 3.7 m/s when it is dropped. The…

A: Given,

Q: Zach, whose mass is 80 kg, is in an elevator descending at 10 m/s. The elevator takes 3.0 s to brake…

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Q: There are two masses suspended from a pulley. The mass on the right is 100kg and it takes 5.0 s to…

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Q: A 68.5 kg person is standing inside an elevator. The elevator is going from the 1st floor to the 9th…

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Q: The weight of an astronaut plus his space suit on the Moon is only 250 N. (a) How much does the…

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Q: What is the weight of a 500 g package of spaghetti noodles? A) in Newtons B) in oz.

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Q: A car with a mass of 1000.0 kg accelerates from 0 to 90.0 km/h in 10.0 s. (a) What is its…

A: a) We know ,    V=u+atgiven , V= 90km/h              = 90x1033600            = 25m/su=0t=10…

Q: A football player weighing 85 kg accelerates from a stationary position, over a distance of 10m and…

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Q: An object has a mass of 100 kg. a) How much does it weigh on Earth? b) How much does it weigh on the…

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Q: An astronaut’s pack weighs 17.5 N when she is on the earth but only 3.24 N when she is at the…

A: (a) The expression for weight on Earth is, W=mg Thus, the mass can be found as, m=Wg   =17.5 N9.8…

Q: A 6.46 kg lego block is pulled along a friction surface with a net force of 3.2 N. What is the…

A: Given:Mass,m=6.46kgForce,F=3.2 NFind the acceleration of the lego.Now,The friction force acts to…

Q: 8. A certain speed boat weighs 4,900 N. It can accelerate from 0 to 20 m/s in 5 seconds. (a) What is…

A: Given  The weight of the boat is W = 4900 N. The initial velocity is u = 0. The final velocity is v…

Q: An astronaut weighing 193 lbs on Earth is on a mission to the Moon and Mars. (a) What would he weigh…

A: Given  Weight on earth W=193lbs=193×4.45=858.507 N

Q: A ball of 23 g hangs from the roof of a freight car by a string. When the freight car begins to…

A: a. the net force in the vertical direction is W=Tcosθ

Q: A person is trying to lift a box off the floor. The box has a mass of 55kg and the person can lift…

A: In this question a person is trying to lift a box of 55kg , with a force of 300 N.

Q: A 1000N cow is sitting in the grass. a. What is the cow’s mass? b. What is the cow’s weight? c. What…

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Q: A 2200 kg truck has put its front bumper against the rear bumper of a 2400 kg SUV to give it a push.…

A: The force is given as; F=ma (a) The maximum possible acceleration the truck can give SUV is;…

Q: A man pushes a 92 kg crate with 272 N of force.The crate experiences a force of friction of 25 N. a.…

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Q: Two 25 N weights are suspended at opposite ends of a rope that passes over a light, frictionless…

A: Weight , W = 25 N To find = a) Tension in rope                 b) Tension in chain

Q: A 6.0- kg object is brought to the Moon, where the acceleration due to gravity is only one- sixth of…

A: Required :  (a) What is the mass of the object on the Moon?   (b) What is the weight of the object…

Q: A 12.23 kg box made of rubber is on dry asphalt at rest. A man applies 803 N of force to the South.…

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Q: (a) What is the force of gravity between two 1295 kg cars separated by a distance of 37 m on an…

A: Solution        Given m = 1295kg                   R = 37m

Q: a) what is the force (in N) of gravity between two 1075 kg cars separated by a distance of 25.0 m on…

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Q: Zach, whose mass is 85 kg, is in an elevator descending at 12 m/s. The elevator takes 3 s to brake…

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Q: A 110 g hockey puck sent sliding over ice is stopped in 15 m by the frietional force on it from the…

A: In the system consisting of the puck and ice , there are two types of forces acting in the…

Q: A force of 1600 N acts parallel to a ramp to push a 300-kg piano into a moving van. The ramp is…

A: Force , F = 1600 NMass of piano , m = 300KgInclination of ramp ,θ = 20°

Q: The weight of an astronaut plus his space suit on the Moon is only 350 N. (a) How much does the…

A: The acceleration of gravity on the moon is gmoon Acceleration of gravity on the earth is gearth…

Q: A 14.0-kg box is sitting on the floor. If I push straight down on the box with a force of 90 N, What…

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Q: An astronaut who has a mass of 80 kg is being transported to the International Space Station.…

A: Given: Mass of the astronaut , M = 80 kg

Q: A mango weighing 3 N is at rest on your head. What is the net force on the mango? a.) If the mango…

A: since mango is at rest. Its acceleration is zero. So by Newton's 2nd law  Fnet = m×a = m×0  Fnet = 0

Q: You work at a garden store for the summer. You lift a bag of fertilizer with a force of 114 N, and…

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Q: 13. A7.5 kg backpack is sliding across the floor. The coefficient of friction between the backpack…

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Q: A boy sits in a tire that is attached to a rope that passes over a pulley fastened to the ceiling…

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Q: (I)A force of 35.0 N is required to start a 6.0-kg box moving across a horizontal concrete floor.…

A: The vertical force, ΣFy=FN-mg0=mg-mg0=0   The horizontal force, ΣFx=Fapp-Ffr0=Ffr-Ffr0=0

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!