Cart Mass, mc  . 284 kg Angle, θ 49 degrees Distance, d . 75 m Equilibrium . 240 Velocity 1 . 664 m/s Velocity 2 . 672 m/s Velocity 3 .670 m/s Average Velocity .669 m/s What is the kinetic Energy ? Using the average velocity, calculate the cart's change in Kenetic Energy. KE = (1/2) mv2

Q: A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving up at…

A: Given- Mass of box (m) = 4 Kg, Velocity of box (v) = 5 m/s Distance travelled (S) = 8 m g = 10 m/s2

Q: 8. A player hits a baseball with mass of 0.86 kg over the outfield fence. The ball leaves the bat…

A: Let the kinetic energy of ball while leaving the bat be K m=0.86 kg v=36 m/s

Q: A car of mass 1,000 kg moves with a speed of 5.00 m/s. If the car triples its speed to 15.0 m/s then…

A:

Q: A weighlifter lifts a 50-kg barbell a vertical height of 2.0 m in 5.0 s. What is the average power…

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Q: 1. Determine from the expression for kinetic energy (KE = ½ mv2) the combination of units,…

A: Given that, Kinetic energy (KE = ½ mv²)  Here m is the mass And v is the velocity We know that the…

Q: How much work is needed to change the speed of a 2375 kg sport utility vehicle from 15.0 m/s to 60…

A: Given data:  Mass (m) = 2375 kg Initial velocity (Vi ) = 15.0 m/s Final velocity (Vf) = 60 m/s…

Q: You can think of the work-energy theorem as a second theory of motion, parallel to Newton's laws in…

A:

Q: Kinetic Energy = 40 x 16 Kinetic Energy = 640 J %3D 1. You serve a volleyball with a mass of 2.1 Kg.…

A: Given, Mass of the volley ball, M = 2.1 kgspeed, v = 30 m/s

Q: What is the Net Work ? Wnet = Fnetd cos θ Cart Mass, mc . 284 kg Angle, theta 49 degrees Distance,…

A:

Q: A ball of mass 100 g, is dropped from a height of 22 m and moving vertically down. Ignoring the air…

A: Solution: Given: m = mass of ball = 100 g = 0.100 kg g = gravitational acceleration = 9.81 m/s2 h1 =…

Q: 3. An object has a mass of 7 kg. calculate it potential energy 6m above the ground. а. 411.6J b.…

A: Taking ground as reference level (a level at which potential energy is taken to be zero) the…

Q: The kinetic energy of a car is 1.0 x 10^5 J. Calculate its kinetic energy if the car’s speed is a.…

A:

Q: There is a 100 kg box that starts at rest. a person pushes that box over the course of 18 meters…

A: Given mass of box m = 100 kg initial speed u = 0 m/s final speed v = 10 m/s displacement x = 18 m…

Q: The power output (in W) needed from a motor to lift a mass of 1.5 x 104 Kg, 25 m in 6.0 s at…

A: The mass is The displacement of the mass is The lifting time is

Q: 5. at the top of a 11.40 m high water slide you start with a. speed it 10.5 m/s and dive into the…

A:

Q: A certain truck has twice the mass of a car. They both move with the same speed. If the kinetic…

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Q: 39. A 58 kg pole vaulter needs to vault a height of 6.0 m. Assuming that all his kinetic energy can…

A:

Q: 1-kg book is thrown from a height of 5 meters with a speed of 20 m/s. Compute the total energy when…

A:

Q: 1. A block of mass 12.0 kg is placed on a rough incline with an angle of 30° (g = 10 m/s²). The…

A: Consider the following diagram A block of mass m=12kg is on an inclined plane. The forces acting on…

Q: A block of mass 2.0 kg is moving to the right and changes its speed from 3.0 m/s to 1.0 m/s. Match…

A: Given data:  Mass (m) = 2.0 kg Initial velocity (Vi) = 3.0 m/s Final velocity (Vf) = 1.0 m/s…

Q: 2. A hand gun fires a 7.50g bullet at a speed of 377m/s. A. Calculate the bullet's kinetic energy.…

A:

Relativistic Energy and Momentum

According to classical physics, time flow is the same for every observer. But according to einstein's theory, time flow is different for different observers. The idea that time flow is not the same for all may sound strange because we may not experience this effect in everyday life. This effect is only observed when an object moves with some velocity comparable to the velocity of light. This velocity is termed relativistic velocity.