When a body is in equilibrium. ( choose one) 1. must have zero momentum 2. no forces can be acting on it 3. may be accelerating uniformly 4. vector sum of forces acting on it must be zero

Q: 5. An old rope can now only safely suspend 120 kg. When the rope is tied to a beam, it hangs down…

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Q: Weight on the left is 50 grams and the distance from the center point is 4 units. The distance of…

A: Given: The mass of the object at the right is m = 50 g The distance between the object and the…

Q: 41. Predict/Calculate As part of a physics experiment, you stand on a bathroom scale in an elevator.…

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Q: The following three forces act on an object: F1=( i−6 j) N , F2=(−2 i+ k) N , and F3=( i+4 j−2 k) N.…

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Q: An arrow with a mass of 250 g has a speed of 27 m/s before it passes through a 1.5 cm piece of…

A: MA = Mass = 250 g = 0.250 Kg , Vi = Velocity = 27 m/s T = d = thickness = 1.5 cm = 0.015 m Vf =…

Q: A ball with a mass of 10 g hits the wall with a speed of 280 m/s, making an angle of 30° with the…

A: Given data:  Mass of the ball (m) = 10 g = 0.010 kg Initial velocity = 280 m/s,  angle (θ) = 30° to…

Q: 1.Two ice skaters stand at rest in the center of an ice rink. When they push off against one another…

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Q: 2. Can an inanimate object (such as a table) exert a force? Can the magnitude of the force exerted…

A: Inanimate objects like tables, cars, mobile, etc, can also exert force. All these objects have a…

Q: 5. While a particle is moving with constant velocity it is acted on by 2 forces. One of the forces…

A: Given data: The first force is F1=-2i+6j Since the particle is moving with constant velocity, the…

Q: A block is pushed across a horizontal surface by the force shown in the image. If the coefficient of…

A:

Q: A tennis ball, 0.314 kg, is accelerated at a rate of 164 m/s² when hit by a professional tennis…

A:

Q: 3) To hit a home run in baseball, the batter needs to hit the ball to give it a speed of at least 75…

A:

Q: Starting from rest, a 2-kg body acquires a speed of 8 m/s in 2 seconds. The net force acting on the…

A: The expression for the acceleration is given by, a=v-ut Use the given values, a=8 m/s-02 s=4 m/s2

Q: 2. A horizontal force of 120 N is needed to initially move a 50-kg container from rest. A constant…

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Q: 14. Cars that are moving along horizontal roads are going to be stopped by plowing into identical…

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Q: A block of mass m is dropped from the fourth floor of an office building and subsequently hits the…

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Q: 4.) How long (T in seconds) does a force of F=200N need to be applied to a mass of M=10kg, to…

A: Given: The mass of the object is 10 kg. The applied force is 200 N. The initial velocity is 0 m/s.…

Q: 1.supposed that the body with 2 kg has an initial velocity of 10m/s and is then pulled 4 meters by a…

A: Work is defined as the measure of the energy transfer that occurs when an external force is applied…

Q: 1) 12N 26 N 60 N 7 kg 40 kg 300N Net Force = Net Force = 180 N 3) 4) 40 kg 70 N 20 N Net Force = Net…

A: 1) Net Force = 26 N - 12 N = 14 N 2) Net Force = 300 N + 60 N = 360 N 3) Net Force = 180 N + 20 N =…

Q: Given that the force per unit area that may cause a bone fracture is 109 dyne/cm2,the minimum height…

A: Mass of person (m) = 70 kgForce per unit area that may cause fracture = 109 dynecm2Area of heels (A)…

Q: how much force do the expanding gases in a gun barrel exert on a 6.0g bullet as it accelerates from…

A: The objective of the question is to calculate the force exerted by the expanding gases in a gun…

Q: 1.A weight lifter lifts a 350-N set of weights from ground level to a position over his head, a…

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Q: When you jump, remember to bend your knees as you land. Explain why this is important?

A: Impulse = change in momentum

Q: A 50.0-kg person jumps onto the floor from a height of 2.7 m. If he lands stiffly with his knee…

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Q: 2-27. Determine the resultant of the coplanar force system in Fig. P 2-27 and locate it with respect…

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Q: 9. Am - 500 kg sack of coal falls vertically onto a M = 2000 kg railroad flatcar which was initially…

A: Given Sack mass msack           = 500 kg Railroad car mass mcar = 2000 kg Initial velocity vi…

Q: A pile driver weighing 200 pounds strikes the top of the pile after being fallen from a height of 20…

A:

Q: 1. Mr. Mangan picks up a 0.5 kg rock and throws it at the bad guy. If the rock is in his hand for…

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Q: boat initially traveling at 3 m/s stops comes to a full stop in 30 seconds. If the mass of the boat…

A:

Q: The weight on the left is 50 grams and the distance from the center point is 4 units. The distance…

A: Option

Q: An arrow, starting form rest, leaves the bow with a speed of 25.0 m/s. If the average force exerted…

A: The given data are: u=25 m/sF'=2F Here, u is the speed in the first case, F' is the average force in…

Q: A stone, when thrown on a glass window, smashes the windowpane to pieces, but a bullet from the gun…

A: Because of the small speed, the stone remains in contact with the windowpane for a longer period. It…

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: