A3.03 kg briefcase is sitting at rest on a level floor. the acceleration of gravity is 9.81 m/s 2 . a) what is its acceleration? answer in units of m/s 2 . 018 (part 2 of 2) 10.0 points b) what is its weight? answer in units of n

a) a = 0

b) W = 29.72 N  

Explanation:

a)The acceleration of an object is defined as the change of its speed with respect to a time interval, Because the briefcase remains at rest, its acceleration (a) is zero.

a=0

b) Calculation of the weight of the briefcase

The formula to calculate the weight is the following:

W= m*g      Formula (1)

Where:

W : is the weight in Newtons (N)

m  : is the mass in kilograms (kg)

g   : is the acceleration due to gravity in meters over second square (m/s²)

Data

m=3.03 kg :  mass of the briefcase

m=9.81 m/s² : acceleration due to gravity

We replace data in the formula (1)

W= m*g = 3.03 kg * 9.81 m/s²

W= 29.72 N  

which statement about this sum is true? −245+2.7

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr