The kinetic energy of an object is 200 Joules while its' momentum is 8 kg m/s. What is the speed of this object?     A. 25 m/s   B. need to know the mass   C. 1600 m/s   D. 50 m/s   E. 80 m/s

Q: A pitcher throws a 0.60 kg ball of clay at a 3.0 kg block of wood. The clay sticks to the wood on…

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Q: A student at another university repeats the experiment you did in lab. Her target ball is 0.860 m…

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Q: An archer shoots an arrow toward a 300-g target that is sliding in her direction at a speed of 2.05…

A: Dear student The momentum remains conserved when there is no external force acting on the system.…

Q: Food fight! Someone throws a perfectly good hamburger across the cafeteria. What velocity does iy…

A: given mass m=0.35 kgKE=79 J

Q: The golf ball had a mass of 50 g and he transferred 56 J of energy to it. ) State the equation…

A: (c)  (i) The relation between the kinetic energy and the mass is  K =12mv2 where, v is the speed .…

Q: Jeric, a professional rooftop futbol player, kicked a 0.450 [kg] ball off a rooftop that is 81.0 [m]…

A: Diagram for above situation.

Q: A 320 g air track cart traveling at 1.25 m/s suddenly collides elastically with a stationary 270 g…

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Q: A 25 kg toy car travels down a ramp.  The car speeds up and reaches a velocity of 0.75 m/s.  What is…

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Q: A 9.0kg ball is traveling with a speed of 5m/s. What is its momentum?

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Q: We might think that a ball that is dropped from a height of 10 feet and rebounds to a height 5/8 of…

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Q: Two objects A and B have the same kinetic energy. Object A with massm is initially moving with speed…

A: Mass of A is m Mass of B is m/2 Speed of A is vi Suppose that speed of B is vB

Q: es, what is its final speed? Hint

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Q: A 4.0-N puck is traveling at 3.0 m/s. It strikes an 8.0-N puck, which is stationary. The two pucks…

A: Given, weight of the puck, m1g = 4.0 Nm2g = 8.0 N Initial speed (before collision) u1 = 3.0 msu2 = 0…

Q: An older-model car accelerates from 0 to speed vin 15 s. A newer, more powerful sports car of the…

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Q: A 3. A bullet fired from a gun has a KE of 10,500 J. What is the mass of the bullet if it moves at…

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Q: A 10,000kg coal car on the Great Northern Railroad coasts under a coal storage bin at a speed of 2.0…

A: Given: The mass of the coal car is 10000 kg. The initial speed of the coal car is 2 m/s. The mass of…

Q: A 5 kg block slides across a flat frictionless surface at a speed of 2m/s. It collides with a 3 kg…

A: Given data:  m1 = 5 kg, V1 = 2 m/s m2 = 3 kg, V2 = 0 m/s Required: The final speed just after blocks…

Q: Two lab carts are pushed together with a spring mechanism compressed between them. Upon release, the…

A: Mass of first cart = m1 = 5 kg Mass of second cart = m2 = 2 kg After release Velocity of first cart…

Q: A 300 kg cannon and its 15 kg cannonball (already loaded inside) are at rest. What is their initial…

A: Given data: The mass of the Cannon is, m1= 300 kg Mass of the cannonball is, m2= 15 kg Formula used:…

Q: 2 steel balls have the same mass and travel at the same speed (with the total linear momentum is 2mv…

A: An elastic collision is a collisions in which both momentum and kinetic energy are conserved.

Q: The velocity, v, in metres per second, of a moving object is related to its kinetic energy, K, in…

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Q: An 80 kg mass moving at 10 m/s collides with a stationary 48 kg mass. After the collision, both…

A: Given : Masses , M = 80 Kg with initial velocity, u1 = 10 m/s   m = 48 Kg at rest i.e u2 = 0 m/s…

Q: A pitcher throws a 0.90 kg ball of clay at a 5.0 kg block of wood. The clay sticks to the wood on…

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Q: A 50 lb child runs at 2.0 m/s and jumps onto a shopping cart and holds on for dear life. The cart…

A: Mass of child = 50 lb = 22.679 kg v =2 m/s mass of the cart = 40 kg

Q: Two 465g blocks of wood are 2 m apart on a frictionless table. A 15g bullet is fired at 419 m/s…

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Q: An archer shoots an arrow toward a 300-g target that is sliding in her direction at a speed of 2.45…

A: Given: An archer shoots an arrow toward a 300-g target that is sliding in her direction at a speed…

Q: Write the kinetic, potential and total energy of a baseball having a mass of 0.145kg held 10 meters…

A: 1) Potential energy of baseball at height of 10 m above ground .and having mass 0.145kg PEi = mgh…

Q: An archer shoots an arrow toward a 300-g target that is sliding in her direction at a speed of 2.45…

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Q: About 50,000 years ago, a meteor crashed into the earth near present-day Flagstaff, Arizona.…

A: Consider the mass of meteor is about 1.4×108 kg which hits at a speed of 12×103 m/s.

Q: 3. A racing car with a mass of 1500 kg attains a speed of 180 km/hr. What is its kinetic energy?…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: A pitcher throws a 0.70 kg ball of clay at a 2.0 kg block of wood. The clay sticks to the wood on…

A: Given data:  Mass of ball of clay (m1) = 0.70 kg Mass of block of wood (m2 ) = 2.0 kg Final velocity…

Q: A ball with a mass 0.40 kg is initially moving to the left at 30 m/s. After hitting the wall, the…

A: The momentum of the body is given as P=Mv

Q: A pitcher throws a 0.90 kg ball of clay at a 2.0 kg block of wood. The clay sticks to the wood on…

A: Given data The mass of the ball of clay is mb = 0.90 kg. The mass of the block of wood is mc = 2 kg.…

Q: A biker with a mass of 75 kg moves along the path with a constant velocity of 5 m/s. What is the…

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Q: (II) A 144-g baseball moving 28.0 m/s strikes a stationary 5.25-kg brick resting on small rollers so…

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Q: An archer shoots an arrow toward a 300-g target that is sliding in her direction at a speed of 2.35…

A: According to the conservation of linear momentum,

Q: empty 45 kg cart is traveling at 10.0 m/s on a frictionless track at the amusement park. A sudden…

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Q: An object in motion may not have what is the answer? a) velocity b) potential energy…

A: Given : An object is in motion

Q: A 50kg child is riding their 3kg skateboard down the street at 5m/s. The child jumps off the front…

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Q: I A boy on a skateboard coasts along at 5 m/s. He has a ball that he can throw at a speed of 10 m/s.…

A: Given : Speed of boy on skateboard coasts, u = 5 m/s Speed at which boy can throw the ball, v = 10…

Q: 3.) A mass of m=20kg is at rest and at a height of 12 meters above the ground. The object is…

A: Given: Mass, m = 20kg Height, h = 12 m Acceleration due to gravity, g = 9.8 m/s2

Q: An archer shoots an arrow toward a 300-g target that is sliding in her direction at a speed of 2.15…

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Q: A 60 lb child runs at 5.0 m/s and jumps onto a shopping cart and holds on for dear life. The cart…

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Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.