A firefighter of mass 79 kg slides down a vertical pole with an acceleration of 4 m/s 2 . The acceleration of gravity is 10 m/s 2 . What is the friction force that acts on him? Answer in units of N.

Q: 5.0 second interval? A net force of 5.0 x 10 newtons causes an object to accelerate at a rate of 5.0…

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Q: An apple weighs 1 N. The net force on the apple when it is in free fall is   answer choices  0 N.…

A: Third option (1N) is correct. Explanation-  Given that, Weight of apple (w) = 1N Since, we know…

Q: An freight elevator has a mass of 750kg and is accelerating 1.6 m/s/s upwards. What is the force of…

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Q: Neglecting friction and air resistance, what force is required to accelerate an automobile weighing…

A: Given Dara : The weight of the automobile is given as W=2.5×104 N The initial speed of the…

Q: If the net force on a 10 kg object is 40 N, what can we say about this object? The object will be…

A: Given data:  Mass (m) = 10 kg Net Force (Fnet) = 40 N Required:  Acceleration (a)

Q: A car has a mass of 1750 kg. If the driver applies the brakes while on a gravel road, the maximum…

A: Given that the value of mass and velocity and maximum friction force. Then We have to determine 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: You are fishing and catch a fish with a mass of 6 kg. If the fishing line can withstand a maximum…

A: Given - mass of fish , m = 6 kg maximum tension fishing line can withstand, F = 100 N

Q: A force of 36 Newtons causes an object to accelerate from rest to a speed of 12 m/s in 6.0 seconds.…

A: Given data:  Force (F) = 36 N Initial velocity (u) = 0 m/s Final velocity (v) = 12 m/s Time (t) =…

Q: If a man weighs 860 N on the Earth, what would he weigh on Jupiter, where the free-fall acceleration…

A: Given that,  W=860 Nmg=860 N   Therefore, the mass of the man is, m=860 N9.8 m·s-2   =87.76 kg

Q: You are pushing a 40 kg sled across some snow with a coefficient of friction of 0.2. How much force…

A: Answer :  The force required to push must be 78.4N .

Q: What is the magnitude of the final velocity of a 7.5 kg moving push cart maintained by an unbalanced…

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Q: A 0.3 kg coffee cup is sitting on a desk. If the acceleration due to gravity is 9.8 m/s what is the…

A: Given  Mass of coffee cup is m= 0.3 kg Acceleration due to gravity is g= 9.80 m/s2

Q: When you push downward an object with a force F, the normal force is equal to * Gravitational force.…

A: Given, Pushing Force F on object Let the mass of an object is m kg As we know that Normal force is…

Q: A box of mass 2 kg has two forces pulling on it in opposite directions. One is pulling to the left…

A: Given,  mass, m = 2 kg acceleration, a=? The horizontal right is taken as the positive x-axis.…

Q: What constant force is required to accelerate a 1000 kg car from rest to 40 m/s over a distance of…

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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 boat with mass of 6.7 * 10 kg is traveling at 1.2 * 10' m/s. What is the magnitude of the force…

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Q: A tractor pulling two trailers, M1 and M2, with a constant acceleration. T has a mass of 200 kg, M1…

A: Given data: The mass of tractor is T=200 kg. The mass of trailer 1 is M1=100 kg. The mass of…

Q: A student of mass 63.4 kg, starting at rest, slides down a slide 23.2 find the force of kinetic…

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Q: A freight train has a mass of 1.5 x107 kg. If the locomotive can exert a constant pull of 7.5 x 105…

A: Since there is no frictional force here then by Newton's 2nd Law our force equation will be:…

Q: As a 2.5 kg ball rolls down a ramp, the net force on it is 15 N.  What is its acceleration?

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Q: Two blocks are tied together by a string. m, m, The blocks slide WITHOUT friction. The mass of block…

A: Please see the answer below

Q: A force of 12 N acts on a body of mass 4kg resting on a rough surface (coeffi- cient of friction is…

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Q: On planet X, an object weighs 12.9 N. On planet B where the magnitude of the free-fall acceleration…

A: Acceleration due to gravity on planet B = 1.54 g Weight on planet B = m * 1.54 g 27.4 = 1.54 * 9.8 *…

Q: Boxes of various masses are on a friction-free, level table. From greatest to least, rank the a. net…

A: (a)The two forces acting on each box are in opposite direction. Hence the net force on each of them…

Q: A woman weighs 554 N on Earth, Her weight on Mars where the acceleration due to gravity s37 m/s is…

A: Given: Weight of woman on earth = 554 N Gravitation on earth = 10 ms2 Gravitation on Mars = 3.7 ms2

Q: A 2 kg book is pushed across a rough table with a 12 N force.  A 2 N frictional force also acts on…

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Q: A 0.3 Kg coffee cup is sitting on a desk. If the acceleration due to gravity is 9.8 m/s what is the…

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Q: When a force of 10N is applied to a body its acceleration is 2m/sz. The mass of the body is 5kg aO…

A: Answer:-    (a) 5 kg Given  Force (F) = 10 N  Acceleration of a body(a) = 2 m/s2  Mass of a body (…

Q: A person of mass m = 55 kg is in an elevator which is accelerating upward at acceleration a= 2.3…

A: Scenario - A man travelling up in a lift feels heavier due to resultant of his weight and…

Q: An object with a mass of 7.8 kg is pulled on a horizontal surface by a horizontal pull of 50 N to…

A: mass of object (m) = 7.8 kg Horizontal force (F) = 50 N (towards the right)Frictional force (f) = 30…

Q: Consider a human who weighs 862 N on Earth. What is the person's mass on Earth? And what is the same…

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Q: Static friction force is direct proportional to O pushing force O Pulling force O gravitational…

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Q: A skier with a mass of 60 kg is sliding down a snowy slope, the slope with an angle of 30 degrees…

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Q: A stone of mass 2 kg and weight 20 N falls through the air. The air resistance acting on the stone…

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Q: What is the weight, in N, of an object with a mass of200 kg at a location where g = 9.6 m/s2?

A: The expression for the weight of the object is,

Q: What is the weight of a mass of 12 kg at a location where the acceleration of gravity is 9.24 m/s2 ?…

A: We know that  Weight = mass × acceleration  Let Weight = W Mass = M Acceleration = a So,

Q: A child is pulling a box of weight 50 N with a constant force F having a direction 8 = 15° as shown…

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Q: A car has a mass of 1.30 × 103 kg. If the force acting on the car is 6.49 × 103 N to the east, what…

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Q: The weight of a mass on Mercury, where the acceleration due to gravity is 3.61 m/s2, is 1235 N. What…

A: weight  of the mass on mercury  W = 1235 N = m g = m x 3.61 m = 1235/3.61   weight of  the mass on…

Q: Two forces act on an object with F1 = (5.914 + 11.722) N and F2 = (−13.854 + 7.965) N. What is the…

A: The given forces are F1=5.914i^+11.722j^F2=-13.854i^+7.965j^

Q: You are standing on the floor of a stationary elevator.  You weigh 85 kg, what is the magnitude of…

A: Given  Mass (m) = 85 kg

Q: Ignoring friction, If an equal force is applied to a 2 kg box and a 6 kg box, the acceleration of…

A: Given data:  Mass (m1) = 2 kg Mass (m2) = 6 kg Equal force is applied to the boxes

Q: A woman weighs 800 N on Earth. When she walks on the moon, she weighs only 133 N. What is the…

A: Weight of women on Earth, WE=800N Weight of women on Moon, WM=133N

Q: The weight of an astronaut plus his space suit on the Moon is only 292 N. How much (in N) do they…

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Q: What will a spring scale read for the weight of a 58.0-kg woman in an elevator that moves (a) upward…

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: