A car which is driven by a force of magnitude 5,400 N against a resistance of magnitude 1,200 N is accelerating at 4.2 ms²². The mass of the car is A 17,640 kg B 1,000 kg C 1,285.7 kg D 4,200 kg

Q: What is the acceleration produced by a force of 680 N exerted on an object of mass 70 kg.

A: Introduction :  In this question we are provided it value of mass and  force . With these data we…

Q: A 0.75 kg book is resting on a table and is then pushed by a horizontal force of 0.25 N. Question 3:…

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Q: The mass of a certain elephant is 1,130 kg. a. Find the elephants weight in newtons b. find its…

A: Given: Mass of elephant (m) = 1130 kg.

Q: 13. Find the power of the man who pushes the box 10m with a force of 25N in a 7seconds. a.) 40 Watts…

A:

Q: The electric motor of a model train accelerates the train from rest to 0.620 m/s in 21.0 ms. The…

A: Given- Initial velocity u=0 The final velocity of the train v=0.620 m/s Time t=21ms=0.021 s The…

Q: This is the law that defines acceleration as the ratio of net force to mass.  A) Newton’s First Law…

A: According to Newton second law of motion is force is directly proportional to the rate of change of…

Q: Calculate the weight (in English units) of a 22-g song sparrow. Express your answer in pounds.

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Q: 2 3 4 5 10 A baseball has a mass of 145 g. A bat exerts a force of 18,400N on the ball. What is the…

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Q: A 3.60 kg box is suspended from a system of massless wires attached to a ceiling. The first wire…

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Q: A force of 1.8 N is applied horizontally to a 683 g cereal box that is at rest on a horizontal…

A: As the box is not moving vertically that means the vertical forces are balanced that is : N = mg…

Q: How long shall a force of 4, 500 N shall be applied on the brakes of a 1200-kg truck moving at a…

A: Given The force applied on brake is F=4500 N. The mass of the truck is m=1200 kg. The initial…

Q: Question 122

A: The force of friction between the crate and the floor is

Q: A 2,056.6 kg elevator is moving upward at a speed of 7.4 m/s. If it takes the elevator 5.4 s to come…

A:

Q: The coefficient of kinetic friction between a 1.5-kilogram block and a table is 0.23.  Two students…

A: Newton's second law of motion states that the acceleration of an object is directly proportional to…

Q: A 1,245.04 kg car at a stop light is rear-ended by a 3,379.96 kg car traveling 70.56 km/h what will…

A: Given that: Mass of car A = 1245.04 kg Mass of car B =3379.96 kg Speed of car b = 70.56 km/h=19.6…

Q: A textbook with a mass of 2.18 kg is pulled across a table with a horizontal force of 5.5 N [E]. If…

A: Given data: Mass (m) = 2.18 kg Horizontal force (F) = 5.5 N, toward East Coefficient of friction (μ)…

Q: 1. What force is necessary to accelerate a 30,000 lbs railway electric car at the rate of 1.25…

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Q: 2. Three people each apply a 100 pound force to a large crate sliding across the floor.The static…

A: Given information: Here, F is the force applied by each individual, W is the crate’s weight, µk and…

Q: A 976 -kg car experiences a net force of 9,441 N while slowing down from 6 m/s to 11 m/s. How far…

A: Given  Mas of car = 976 kg Force on car F = 9441 N Initial speed of car u= 11 m/s Final speed of car…

Q: Directions: Classify the kind of forces listed below according to their type. Make two-column table,…

A: Contact force :  This is the force which is present between bodies when there is a actual contact…

Q: A net force of 3,600 N acts on a car with a mass of 1,200 kg. What is the acceleration of the car?…

A: Given data:  Net force (Fnet ) = 3,600 N Mass (m) = 1,200 kg Required: The acceleration of the car

Q: If a free falling rock hits the ground with a force of 245 Newton, what is its mass ?

A: Given quantities: force with which rock hits the ground (F) = 245 Newton acceleration due to gravity…

Q: 6. Newtons Laws a. Write Newton's First law.. b. Write Newton's Second law. c. Write Newtons Third…

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Q: Question 7 A car is coasting to the right but slowing down. ос F A G D E B Question 8 A ball is…

A: A free-body diagram is used to represent the magnitude and direction of forces acting on an object…

Q: Two forces are applied to a mass.  72.01 N is applied to the right, and 10.03 N is applied to the…

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Q: What amount of thrust is necessary to launch a rocket with a of 2, 347kg with an acceleration of 242…

A: Given Mass of rocket is m = 2, 347 kg Acceleration is a= 242  m/s^2

Q: 29. A box is sliding down an inclined plane as shown. The force of fric- tion is directed toward…

A: Given data: Horizontal force (F) = 15 N Mass (m) = 5 kg Acceleration (a) = 2 m/s2 Required:…

Q: For every action, there is an equal and opposite reaction, is Newton's: A) First law B) Second law…

A: According to zeroth law of Newtons First law: A body at stationery remains at stationery, a body in…

Q: A horizontal force of 224 N is applied to a stationary wooden box in one direction and a  731 N…

A: Given data The horizontal force from one direction is given as F1 = 224 N. The horizontal force…

Q: What is the force of friction between two objects if the coefficient of friction is 0.25 and the…

A: There are two types of friction: (1) Static friction : This friction act when there is no relative…

Q: A 818 kg block was pulled by a force with magnitude 126 N. Find the normal force Select one Са…

A: Given: The mass of the block is 818 kg. The magnitude of the force is 126 N.

Q: Inertia is… A The amount of an applied force. B The resistance of any physical object to be…

A: Required : The inertia is ...

Q: A tractor is speeding up at 3 m/s/s while pulling a 1,011 kg sled with a rope at an angle of 23…

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Q: A physical quantity related to the property of an object to resist changes in its motion

A: Correcr answer is: (A) Inertia

Q: Which of the following is a non-contact force A) Tension B) Friction C) Gravity D) Normal Force 11.…

A: 10. Gravity is non contact force 11. Normal force is a contact force 12. mass =m = 300 g = 0.3 kg…

Q: A body of mass m is attracted toward a 11.1 kg mass, 31.5 cm away, with a force of magnitude 6.60…

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Q: The law that states that net force must not be equal to zero for a body to accelerate or move A.…

A: Newton’s first law states that  " if a body is at rest or moving at a constant speed in a straight…

Q: A boy having a mass of 75 kg holds in his hands a bag of flour weighing 40 N. What is the normal…

A: Write the given values with suitable variables. m=75 kgWb=40 N Here, m denotes the mass of a boy and…

Q: A car of mass 6000 kg moving at 40 m/s is suddenly brought to a stop when a deer crosses the road.…

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Q: Compute for the force on a 975 kg car moving from 12 m/s to 27 m/s in 15 s.

A: Answer  Given  Mass of the car m = 975 kg Final velocity vf = 27 m/s Initial velocity vi = 12 m/s…

Q: A 1750 kg truck traveling with the velocity of 18 m/s due east collided with a tree. If the force…

A: Mass of the truck,  Initial speed of the truck,  Force exerted on the truck,  Final speed of the…

Q: Which one of the following forces is non-conservative? O The electric force The Elastic force O The…

A: Non Conservative Force - When Forces depends on length of path between the starting point and ending…

Q: While standing on a bathroom scale, a 60kg woman accidently holds onto a nearby counter with a force…

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Q: On aircraft carriers, catapults are used to accelerate jet aircraft to flight speeds in a short…

A: Given data *The mass of the jet is m = 17900 kg *The initial speed of the jet is u = 0 m/s *The…

Q: A car of mass 1,323 kg accelerates from rest to 21.8 m/s in 5.31 s. How much force was required to…

A: From Newton's 2nd law of motion, we know that, if an object has mass m and acceleration a then the…

Q: What Law explain why it is unsafe to seat in front of a moving car without wearing your seatbelt…

A: By the first law of Newtons  motion when a body is under motion at constant velocity or at rest the…

Q: A lift weighing 30.0 kN moves upward. Calculate the tension in the cable if the lift is: a)…

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Q: a car with mass 850kg is moving in the right direction at a constant speed of 1.44m/s.what is the…

A: Using to Newton's second law, the force on the car can be given by Fnet=ma

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.