Pls help me with this prob

Explanation:

Total Resistance (Parallel)=12/5 = 2.4

Total Resistance of circuit = 2.4 + 3.6 + 3 = 9

V=IR

4.5 = I * 9

I = 4.5/9 = 1/2 = 0.5A

I=0.5Amperes is the answer

Explanation:

Total Resistance (Parallel)=12/5 = 2.4

Total Resistance of circuit = 2.4 + 3.6 + 3 = 9

V=IR

4.5 = I * 9

I = 4.5/9 = 1/2 = 0.5A

I=0.5Amperes is the answer

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