Physics, 15.07.2020 03:01, ricksterv5000
The kinetic energy KE of an object of mass m moving with velocity v is defined as KE -m2. If a force fx) acts on the object, moving it along the x-axis from xi to x2, the Work-Energy Theorem states that the net weight equal to the change in kinetic energy: mv2 - mv1, where V1 is the velocity at xi and v2 is the velocity at x2. Suppose that when launching a 700-kg roller coaster car an electromagnetic propulsion system exerts a force of 5.7x2 + 1.5x newtons on the car at a distance x meters along the track. Use the Work-Energy Theorem to find the speed of the car when it has traveled 60 meters.
Answers: 2
Physics, 22.06.2019 04:30, xdimplesjoon
Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.
Answers: 1
Physics, 22.06.2019 14:00, meleaallison
Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s
Answers: 2
Physics, 22.06.2019 18:00, jeff2852
Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative
Answers: 3
The kinetic energy KE of an object of mass m moving with velocity v is defined as KE -m2. If a force...
Mathematics, 09.09.2020 16:01
Mathematics, 09.09.2020 16:01
Mathematics, 09.09.2020 16:01
Mathematics, 09.09.2020 16:01
Mathematics, 09.09.2020 16:01
Spanish, 09.09.2020 16:01
Mathematics, 09.09.2020 16:01
Mathematics, 09.09.2020 16:01
Mathematics, 09.09.2020 16:01
Social Studies, 09.09.2020 16:01