Using local acceleration of gravity data from the internet, de- termine the weight, in n, of a person whose mass is 80 kg living in: a. mexico city, mexico b. cape town, south africa c. tokyo, japan d. chicago, il e. copenhagen, denmark

Answer

mass of a person is 80 kg

a) Mexico City, Mexico

acceleration due to gravity in mexico = 9.776 m/s²

weight = 80 × 9.776 = 782.08 N

b) Cape Town, South Africa

acceleration due to gravity in cape town  = 9.796 m/s²

weight = 80 × 9.796 = 783.68 N

c)  Tokyo, Japan

acceleration due to gravity in cape town  = 9.798 m/s²

weight = 80 × 9.798 = 783.84 N

d)  Chicago, IL

acceleration due to gravity in cape town  = 9.803 m/s²

weight = 80 × 9.803 = 784.24 N

e) Copenhagen, Denmark

acceleration due to gravity in cape town  = 9.815 m/s²

weight = 80 × 9.815 = 785.2 N

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s