Question

A truck moving across an ice road is spreading sand across the ice.  The truck can be considered a closed, isolated system.  Which of the following is true? * a. The mass of the truck decreases with no change in the velocity of the truck b.The mass of the truck decreases while the velocity of the truck increases. C.The mass of the truck decreases while the velocity of the truck decreases. D. The mass of the truck remains the same while the velocity of the truck remains the same.​

Answer 1

D

Step-by-step explanation:

The mass of the truck remains the same while the velocity of the truck remains the same.

The concept of a closed, isolated system means that the system is considered to be completely enclosed and does not exchange energy or matter with its surroundings. In this case, the truck is spreading sand across the ice, but it is still considered a closed, isolated system because it is not exchanging matter with its surroundings. The mass of the truck, which includes the truck and the sand inside, remains constant.

Therefore, option D, "The mass of the truck remains the same while the velocity of the truck remains the same" is true.