Astudent solving for the acceleration of an object has applied appropriate physics principles and obtained the expression a=a1 + f/m where a1 = 3.00 meter/ second2 f=12.0 kilogram. meter/second2 and m=7.00 kilogram. first which of the following is the correct step for obtaining a common denominator for the two fractions in the expression in solving for a?
(m/m times a1/1) + (1/1 times f/m)
(1/m times a1/1) + (1/m times f/m)
(m/m times a1/1) + (f/f times f/m)
(m/m times a1/1) +(m/m times f/m )
choose the correct answer choice i put the word times to repersent the dot of multiplcation .

Now that the first three steps have been explained, identify the next three steps, in order. calculate the magnitude of r sum vector components calculate a and b magnitudes calculate the direction of r, calculate x,y components step 4 step 5 step 6

Determine the maximum r-value of the polar equation r =3+3 cos 0

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