How would you respond to a friend that argued that anything moving must have a force on it?  That even if nothing is touching it, there must be some sort of force it has stored or is currently experiencing to keep it going?

Q: A flea jumps by exerting a force of 1.06 ✕ 10−5 N straight down on the ground. A breeze blowing on…

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Q: Show that when a body of mass m is dropped from a height h, the sum of its kinetic and…

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Q: Two objects are attracted to each other. Let's say the attractive force between them is 'F'. If the…

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Q: Existence and Uniqueness Theorem. A motorboat of total mass m = 200kg is facing the shoreline and…

A: Given: Given:  Mass of motorboat = 200 kg Initially boat is drifting away from shore at 0.5 m/s…

Q: Calculate the resultant ground reaction force during the pushoff phase (to the nearest whole number)…

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Q: In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.44 × 10^6 m/s.…

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Q: Two protons are aimed directly toward each other by a cyclotron accelerator with speeds of 2.70×105…

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Q: 2. (a) A motorboat is moving at a speed 10 m/s when its motor shuts and 10 s later the boat slows…

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Q: Two identical rocks of mass 4000000 kg are a distance of 10 meters apart.  What is the force of…

A: The expression for force of gravity is,

Q: Two masses m1 and m2 with a separation distance of d, attract each with a force F. What is the…

A: Mass of the first object =m1 Mass of the second object= m2 Distance of separation= d Force of…

Q: A particle of mass 3 kg is moving with constant velocity of magnitude 10 m/s for 20s. The magnitude…

A: Mass of the body m=3 kg Velocity of the body v=10 m/s Time for which the body moves with constant…

Q: Two spheres of equal diameter have a positive 20 µC and a negative 15 µC, respectively. If they are…

A: Given :- To find force of attraction between two charged spheres.

Q: A 2.1 kg mass at rest on a perfectly smooth (frictionless) table is attached to a fixed wall by a…

A: Given Mass m = 2.1 kg Horizontal force F = 1792 N Compression ∆x = 12.3 cm = 0.123 m

Q: The resistance of air to the motion of bodies in free fall depends on many factors, such as the size…

A: Please see the answer below.     Note: The first three sub-parts are answered below by following the…

Q: Two boxes are attracted to each other by a force of 10.2x 10-3 N. What would happen to the force of…

A: The force will be 12 times of initial force

Q: while sitting inside a boat you are pulling another identical boat with a rope. As a result of that…

A: The identical empty boat will have greater speed.

Q: Suppose a constant force of magnitude F acts on a particle of mass m initially at rest. (a)…

A: The given data tells that the particle was initially at rest thus we can write,…

Q: Answer choices for first box is, Attractive, repulsive and no force. For second box is Attractive,…

A: In this problem the concept of attraction and repulsion is used. In case of similar sign of charges,…

Q: If the magnitude of the net force acting on the particle is F, how long does it take the particle to…

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Q: When a 10mm diameter sphere passes through water at 15° C , at 2m/s (velocity), the drag force is…

A: Given: Diameter of Sphere 1, D1=10 mm Velocity of Sphere 1, V1=2 m/s Drag force of Sphere 1, (Fd…

Q: Particles q₁= -53.0 µC, q₂ = +105 µC, and 93-88.0 μC are in a line. Particles q₁ and q2 are…

A: Charge  Chage  Charge  Distance between q1 and q2 is r12=0.50 mDistance between q1 and q3 is r…

Q: What is the gravitational force exerted on a 50 kg by a 60 kg person standing two meters? What is…

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Q: flea jumps by exerting a force of 1.18 ✕ 10−5 N straight down on the ground. A breeze blowing on the…

A: Force excerted by flea = 1.18 x 10-5 N Force excerted by breeze = 0.54 x 10-6 N

Q: Q3- A charged particle having charge 4x10 -18 C and mass 20g moves with a velocity of m v = (1 - 25)…

A: The electric force is given by  The magnetic force is given by  where, q is the charge, E is the…

Q: The driver of a car traveling at a speed of 18 m/s slams on the brakes and comes to a stop in 4 s.…

A: initial speed(u)=18 m/s final speed(v)=0 (finally stopped) time(t)=4s

Q: A man who has a mass of 80 kg stands on a bathroom scale in a moving elevator . The reading on the…

A: Given: The actual mass of the man is 80 kg. The apparent mass of the man is 85 kg.

Q: 4) 2.5 m A 78.9° 4.5 m B 75.2⁰ C 77.6⁰ Three particles A, B and C are placed such that each lies at…

A: Given, Mass of the particle,  MA = 700 kgMB = 600 kgMC = 600 kg

Q: A 0,160-kg hockey puck is moving on an icy, frictionless, horizontal surface, At t = 0, the puck is…

A: The net force is given by  F = m a  The first equation of motion is  v = u + at  where, m is the…

Q: Velocity (m s´¹) Y 20- 10- 3 4 Time (s) (Hint: acceleration = slope of v-t graph) 0 1 2 S. 5 X

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Q: she pulls a wooden block across a horizontal surface with a constant speed. For trial B, she…

A: In trial 1we can move the wooden block with constant speed by applying a constant amount of force…

Q: In the diagram, q1 = +4.60 x 10-6 C, 92 = +3.75 x 10-6 C, and q3 = -8.30 x 10-5 C. %D Find the…

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Q: Find the word done by the force F in moving an object from P to Q. F = 2i - 3j; P(0, 0), Q(3, 6)

A: Given, F = 2i - 3j  P = (0,0) Q = (3,6) The position vector of Q will be r = 3i + 6j

Q: The mass of a girl is 40 kg.calculate her weight. The weight of a stine is 98N.calculate its mass.…

A: The mass of the girl (m) = 40 kg. The gravitational force by the earth or the weight (W) is given…

Q: A body of mass m is attracted toward a 10.7 kg mass, 27.6 cm away, with a force of magnitude 6.72 x…

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Q: A black aluminum glider floats on a film of air above a level aluminum air track. Aluminum feels…

A: Given :total mass=240 g or 0.240 kgforce=0.823 NIron and magnet are seperated by 2.50 cm

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.