Shown below is a graph of a force applied to a small object as a function of time. If the object has a mass of 5.0 kg and is at rest at t= 0s, how fast is the object moving at t = 4.0 s?

Q: A cheetah accelerates constantly from rest to catch a gazelle. The cheetah covers a distance of 40 m…

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Q: A student lifts a 1kg object vertically at a velocity of 1 m/s . What is the magnitude of the force…

A: Given Mass of an object is m = 1 kg Acceleration due to gravity is g=9.80 m/s^2

Q: Amy, who has a mass of 60 kg, is riding her bicycle in the country. She is traveling at 13 m/s when…

A: Scenario - Amy descends from a hill of certain height with a velocity and climbs up another hill.…

Q: An object with a mass of 1.76 kg is initially at rest upon a horizontal, frictionless surface. An…

A: Mass = 1.76 kg Force = 3.04 N Time = 2.08 sec Velocity =?

Q: A car of mass 250 kg, is accelerated from rest by a net force of 400 N for 20 s.  After this, the…

A: Given: Mass (m) = 250 Kg  time (t1 ) = 20 s  Force (F1) = 400 N  Force (F2) = 100 N

Q: A man pushes an object to the right and exerts a force which has a horizontal compotent of F = 33 N.…

A: External force on the body F = 33 NFrictional force fs = 15 NMass of the object m = 31 kg.Given time…

Q: A runaway train with a mass of 500kg is stopped by batman. If it runway train starts with an initial…

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Q: A worker applies a constant horizontal force of100 N to a block on a smooth horizontal surface. The…

A: Given Data: The force applied is, F = 100 N. The distance moved is, d = 8 m. The time taken is, t =…

Q: A 2.0 kg block is sliding on a horizontal surface slides to a halt due to friction of magnitude 5.1…

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Q: A 1320 kg car skids to a halt on a wet road where μkinetic = 0.32. How fast (in m/s) was the car…

A: Solution: Given: A car is braked to stop it. You are required to find the initial speed of car. m =…

Q: Somone is standing on a piece of cardboard holding a wire that is attached to a vehicle.  The…

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Q: A teacup fell was left on the wing of a fighter jet and did not fall until the jet was already very…

A: When object falls with a constant velocity the drag force on it is equal to the gravitational force…

Q: A theme park is planning out a new free-fall ride. The drop is almost perfectly frictionless, with a…

A: Given:-  The height of the theme park is planning a new free-fall ride h = 190 m. The initial…

Q: A 72 fireman slide down a 3.2 m pole by applying a frictional force of 377 N against the pole with…

A: Given , mass of fireman , m = 72 kg Height of pole , h = 3.2m Frictional force , f = 377 N…

Q: The strings and frictionless pulleys have negligible masses.  The coefficients of kinetic friction…

A: Given that, the mass of block A is mA=3kg the mass of block B is mB=4kg coefficient of kinetic…

Q: A 91 kg janitor wearing running shoes is running across an ice rink at a speed of 3.2 m/s. They try…

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Q: A lump of clay of mass 0.21 kg is dropped from a height of 5.5 m. The clay comes to a full stop…

A: mass of clay is m = 0.21 Kg height from which clay was dropped is h = 5.5 m time taken by the clay…

Q: A rocket sled accelerates to 41 m/s. When the rocket engine stops, the sled skids along its rails.…

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Q: The friction force that a horizontal surface exerts on a 62 kg object is 23 N. If the initial speed…

A: Given data The mass of the object is m = 62 kg. The force applied to the object is F = 23 N. The…

Q: On a snowy road, a driver applies a braking force of 6017 N on his 1174 kg car. The car travels…

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Q: An constant applied force of 40.1 N lifts an 2.50 kg mass straight up, resulting in a final speed of…

A: Given information: Here, m is the object’s mass, F is the constant force applied on the object, and…

Q: A child riding a bicycle has a total mass of 30.6 kg. The child approaches the top of a hill that is…

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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: A car (mass 1000 kg) is traveling at 60 mph (26.82 m/s) when the driver notices a cat 50 m ahead in…

A: The car’s acceleration is calculated from the kinematics equations, Since the car comes to a stop,…

Q: A commercial airplane is coming in for a landing. Just before it hits the runway it is moving at 76…

A: a=v2-u22d=0 m/s2-76 m/s221.6km103 m1 km=-1.81 m/s2

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Q: A child of mass 26 kg , is sliding down a water-slide that has an angle of 32 deg. If the water…

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Q: A student pushes a 12-kg block on a frictionless, horizontal surface If the block is initially at…

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Q: A 2 kg ball is thrown off a 73 m high cliff with a speed of 4 m/s.  How fast (in m/s) is the ball…

A: Given: initial speed of the ball, u = 4 m/s height of cliff, h = 73 m mass of ball, m = 2 kg

Q: A constant applied force of 46.0 N lifts an 2.50 kg mass straight up resulting in a final speed of…

A: Given , Force (F) = 46 N            mass (m) = 2.5 kg    Final Speed (v) = 4.8 m/s…

Q: An object with mass m = 34 kg is pushed with 452 N of force to be moved across a distance of 4.6 m…

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.