What is the net force of an object with a mass of 30 kg and an acceleration of 1 m/s2 15 N
ON
30 N
31 N

Explanation:

The net force of an object can be found by using the formula

From the question

mass = 30 kg

acceleration = 1 m/s²

We have

force = 30 × 1

We have the final answer as

Hope this helps you

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