01. Um carrinho de massa 10 kg é empurrado, horizontalmente, sobre uma superfície plana horizontal, com força constante de 20 N. Uma força resistiva de 5 N, contra o movimento, atua sobre o carrinho. A aceleração do movimento do carrinho é igual a: * 1 ponto a) 2,5 m/s² b) 3,0 m/s² c) 2,0 m/s² d) 1,5 m/s²

Which of the following represents a virtual image?

In a closed system, the total energy prior to an energy transformation is the total energy after. a. equal to b. unrelated to c. greater than d. less than

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue