On Earth, an astronaut and equipment weigh 1,960 N.  While weightless ikn space, the astronaut fires a 100-N rocket backpack for 2.0 s.  What is the resulting velocity of the astronaut and equipment?

Q: A 0.450-kg hammer is moving horizontally at 7.00 m/s when it strikes a nail and comes to rest after…

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Q: A car with a mass of 1010 kg and a speed of v = 20.0 m/s approaches an intersection, as shown in the…

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Q: A stuntman of mass 55 kg is to be launched horizontally out of a spring- loaded cannon. The spring…

A: Mass of stuntman (m) = 55 kg Spring coefficient (k) = 266 N/m Compression in spring (x) = 5 m Need…

Q: A 5.0-kg rock is dropped, initially at rest, from a 6.0- m-high second story window. What will be…

A: Given data: Mass (m) = 5.0 kg Initial velocity (v0) = 0 m/s Height (h) = 6.0 m Required: The kinetic…

Q: 3. What are the spacecraft's accelerations at t=0, 15, 30, and 35 B. A 5,000 kg spacecraft is in…

A: The mass of the spacecraft: The initial velocity of the spacecraft: The final velocity of the…

Q: QUESTION 4 In Unit EM, you saw how contact push/pull interactions can be described using ideas about…

A: (A) This statement is consistent because:     As we know,                               F = ma…

Q: A0.440 kg shuffleboard disk is initially at rest when a player uses a cue to increase its speed to…

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Q: A block of mass M is attached to the lower end of a vertical spring. The spring is hung from the…

A: Mass of block= M Spring constant = k

Q: A 4,617 lb car is driving east at a speed of 44 mph.  A 2,827 lb car is driving north at 34 mph.…

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Q: Power vs airspeed curve for a jet airplane is shown in the Figure. The velocity that corresponds to…

A: Minimum velocity is defined as that velocity at which the value of Power is minimum . From the graph…

Q: 1. A 10-kg rock and a 20-kg rock are thrown upward with the same initial velocity and experience no…

A: When a rock is thrown upwards with initial velocity v and no air resistance is present, then there…

Q: The coefficient of friction between the block (m3kg) and the surface in below figure is p=0.4. The…

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Q: Mike pushes a box with a mass of 5.87 kg giving it an initial velocity of 2.18 m/s. The box comes to…

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Q: Q6. A car of mass m moving at a speed v is stopped in a distance x by the friction between the tires…

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Q: A bowling ball is dropped from the top of a building that has a height of h = 104 m. a.  Assuming…

A: Given: The height of h = 104 m The initial velocity of the ball is vi=0 (because dropped from…

Q: During a practice dive, a 53-kgkg diver jumped to a maximum height of 4.7 mm above the water before…

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Q: A Physics book of unknown mass is dropped from rest 5.5 m. a). Draw a sketch of the scenario. b).…

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Q: The 1.5 kg physics book in figure is connected by a string to a 350 g coffee cup. The book is given…

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Q: 4. An 8000 kg roller coaster, traveling along the frictionless track shown, has velocity v, = 30…

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Q: A pendulum is made by tying a 580 g ball to a 41.0 cm-long string. The pendulum is pulled 25.0 0 to…

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Q: 2.00m/s on the track. If a student drops a 50g weight on the PASCar and the weight sticks with the…

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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: When a model rocket is launched, the propellantburns for a few seconds, accelerating the rocket…

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Q: An 82 kg diver jumps from a 6.5 m high platform. What is their velocity just before they hit the…

A: Mass of driver m = 82  kg    Height of platform h = 6.5 m

Q: A 69.5 kg football player is gliding across very smooth ice at 2.25 m/s. He throws a 0.470 kg…

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Q: Corey, whose mass is 95 kg, stands on a bathroom scale in an elevator. The scale reads 830 N for the…

A: Apply newton’s second law of motion along the motion of the lift,

Q: a. Calculate the force needed to bring a 980-kg car to rest from a speed of 76 km/h in a distance of…

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Q: You are part of a searchand- rescue mission that has been called out to look for a lost explorer.…

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Q: A particle of mass 6kg moves according to the equation x (t) =10t², where x is in meters and t is in…

A: Given: The mass of the particle is 6 kg. The equation of the position is xt=10t2.

Q: 2. When you weigh yourself on solid ground, your weight is 790 N. You stand on a bathroom scale in…

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Q: When the mass reaches point x = 0, its kinetic velocity is? *

A: The velocity of a body executing SHM is maximum at the mean position and away from the mean…

Q: A box of mass 2.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving up at…

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Q: 16.A person kicks a ball with a force of 250 N that accelerates the ball at a rate of 5 m/sec2. What…

A: Force applied by the person while kicking a ball (F) = 250 Newton Acceleration produced in the ball…

Q: 39. a. With what initial speed must you throw a ball vertically for it to reach a height of 20 ft?…

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Q: 1. A Roller Coaster showing in the picture bellow of mass of M = 144 Kg is moving through the 3…

A: Potential energy is the energy of a body having mass by virtue of its height. Mathematically it is…

Q: 4. A 4 kg large box is brought to a stop from a speed of 5 m/s due to friction and a large spring…

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Q: A Body that weighs W newtons falls from a height of 600mm and strikes a spring whose scale is 7…

A: Given that:- Spring constant=7N/mm

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: Jeff of the Jungle swings on a 7.6-m vine that initially makes an angle of 37° with the vertical. If…

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Q: Boxing gloves are padded to lessen the force of a blow. The glove and face compress 7.50 cm during a…

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Q: 36. A truck is moving with S constant acceleration a up a hil that makes an angle with the…

A: The free body diagram for the truck moving uphill is as follows

Q: A baseball is thrown vertically upward and feels no air resistance. As it is rising: Its momentum is…

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Q: 7. A 20.0 kg box traveling initially at 5.0 m/s slides to a stop on a surface where μ=0.300. Δd =…

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Q: A 7100-kg railroad car travels alone on a level frictionless track with a constant speed of 16.0…

A: Given that,Mass of railroad car  : m1 = 7100 (kg)Mass of load : m2 = 2650 (kg)Speed of car : v1 = 16…

Q: Mike pushes a box with a mass of 5.97 kg giving it an initial velocity of 2.64 m/s. The box comes to…

A: Given :- The mass  m= 5.97 kg  The initial  velocity u = 2.64 m/s  Final velocity v = 0 m/s…

Q: w (N) 900 750 600 0- 0 2 6. Henry and Elevator : Henry gets into an elevator on the 50th floor of a…

A: Given, Henry gets into an elevator on the 50th floor of a building and stands on a weighing scale.…

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: