30 J
375 Js (((((((((((: this is the right answer
Work done = increase in kinetic energy ie 1/2 * 10 * (3+2)(3-2) [recall a2 - b2 = (a+b)(a-b)] Hence work done = 25 joule.
The work done on the bicycle is equal to the change in kinetic energy. The change in kinetic energy is given by 1/2 * m * (vf^2 - vi^2), where m is the mass of the bicycle, vf is the final velocity, and vi is the initial velocity. Plugging in the values, the work done is 625 J.
To calculate the work done on the sled to increase its speed, you need to know the initial and final kinetic energy. The work done is equal to the change in kinetic energy, which is given by the formula: Work = (1/2) * m * (vf^2 - vi^2) Substitute the mass of the sled, initial speed, and final speed to find the work done.
3000j
The invention of the multi-speed bicycle increased the usefulness of the vehicle. It made it easier to pedal up hills giving it much more range.
312.5 J
30 J
3000 J *Shelby Sarah*
750 j
The work done is equal to the change in kinetic energy, which can be calculated using the formula: W = ΔKE = 1/2 m (v_f^2 - v_i^2). Plugging in the values, the work done to increase the speed of the scooter from 10 m/s to 20 m/s is 6000 J.
The work done to increase the speed of the scooter can be calculated as the change in kinetic energy. The initial kinetic energy is given by (1/2)mv^2. The final kinetic energy is (1/2)m(20)^2. The work done is the difference between the final and initial kinetic energies.