Question

Thomas helps his older brothers, who own a junk yard, on the weekends to earn extra money. He likes to help 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

Answer 1

The answer to this is :A because the question asks you to choose the cars that will need the most to least force to move the cars.

I had this question on usatestprep.

Answer 2

white, blue, red

Step-by-step explanation:

Mass of white car, m₁ = 2700 kg

Mass of red car, m₁ = 1500 kg

Mass of blue car, m₁ = 2100 kg

From Newton's second law of motion :

F = m a

i.e. Force is directly proportional to the mass of the object

So, the car having maximum mass requires large amount of force i.e. white car requires large amount of force to move and red car requires least amount of force.

Hence, the correct order is (A) "white, blue, red".