A model train powered by an electric motor accelerates from rest to 0.600 m/s in 26.0 ms. The total mass of the train is 670 g. What is the average power (in W) delivered to the train by the motor during its acceleration?

The potential energy of an interaction is given by U(x)=ax², where a = +6.4 J/m². Initial speed of a 0.79-kg object in this system is 2.63 m/s at x = 0. A. How far does the object travel before it reaches a speed of v = 0? Express your answer with the appropriate units. B. Does your answer in the previous part depend on whether the object is traveling in the positive or negative  direction? Yes, the answer in the previous part is for the object traveling in the negative x� direction, the distance for the object traveling in the positive x� direction is greater than the obtained result. Yes, the answer in the previous part is for the object traveling in the positive x� direction, the distance for the object traveling in the negative x� direction is greater than the obtained result. No, it does not depend on whether the object is traveling in the positive or negative x� direction.

The electric motor of a model train accelerates the train from rest to 0.520 m/s in 31.0 ms. The total mass of the train is 855 g. Find the average power delivered to the train during its acceleration. W

ma (m=56.2 kg) is traveling at a speed of 12.8 m/s at the top of a 19.5-m highroller coaster loop.a. Determine Ima's kinetic energy at the top of the loop.b. Determine Ima's potential energy at the top of the loop.c. Assuming negligible losses of energy due to friction and air resistance,determine Ima's total mechanical energy at the bottom of the loop (h=0m).d. Determine Ima's speed at the bottom of the loop.*only answer d

You push your physics book 2.10 m along a horizontal tabletop with a horizontal push of 2.10 N while the opposing force of friction is 0.700 N. A. How much work does your 2.10 N push do on the book? B. How much work does the friction force do on the book? C. How much work does the normal force from the table do on the book?

A model train powered by an electric motor accelerates from rest to 0.520 m/s in 23.0 ms. The total mass of the train is 660 g. What is the average power (in W) delivered to the train by the motor during its acceleration? 3.056 How is the work done related to the change in kinetic energy? What is the initial kinetic energy? How is kinetic energy related to speed? How is power related to work and time? Be careful of units. W Need Help? Read It