Question

can you solve these 2 parts ​

Answer 1

b

distance to complete 1 oscillation = 4.5 X 4 = 18 cm

Answer 2

distance to complete one oscillation = 4.5*18

= 81

(b) Given :

distance = 225m. time = 1.5h

so,

$speed \: = \frac{distance}{time}$

now, in m/h

$speed \: = \frac{225}{1.5} = 150 m \: h$

in km/h

$\frac{225}{1000} = 0.225m$

so putting in formula

$speed \: = \frac{0.225}{1.5} = 0.15km \: h$

HOPE IT HELPS