A210 kg meteoroid is heading toward the earth accelerates by 2.4 × 105 m/s2.

according to newton's second law of motion, what is the size of the force that must have acted to change the motion of the meteoroid?

a.
87.5 n

b.
5.04 × 107 n

c.
8.75 × 10-4 n

d.
1.14 × 103 n

show your work!

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

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