Un automóvil de juguete de 50 g recorre una pista con velocidad de 5 m/s que mantiene hasta llegar a una pendiente con fricción que lo deja 30 cm más arriba con una velocidad de 3 m/s. ¿Qué trabajo realizó la fricción en el juguete?
A. 0,253 J.
B. 0,147 J
C. 0,147 J.
D. 0,253 J.

si alguien es bueno en física porfa ayuda

An object has a weight of 500 on earth what is the mass of this object

Awheel of mass 48 kg is lifted to a height of 0.8 m. how much gravitational potential energy is added to the wheel? acceleration due to gravity is g = 9.8 m/s2. a. 30.4 j b. 3.1 j c. 297.9 j d. 11,321 j

Click the game tab at the bottom of the simulation and select level 1. (there is no seesaw balance for this part of the activity.) balance the first equation, and click check to see if you got it right. if you can’t balance it in the first try, you can try again. work through the five equations for level 1. click continue to go on to level 2, and later level 3. each level is more difficult than the one before. keep trying until all the equations are balanced. in one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.