Aforce is applied to an object at rest with a mass of 100 kg. the same force is applied to an object at rest with a mass of 1 kg. what differences in their motion would you observe? explain your reasoning.

the object with less mas will move faster than the other object.

Explanation: Let's do a simplification of this case, I will only use newton's second law, this law says F = ma

where f is force, m is mass and a is acceleration.

Then, if in bot objects the force is the same, let's call it F, we have:

F = 100kg*a1

and

F = 1kg*a2

now let's isolate the accelerations:

a1 = F/100kg

a2 = F/1kg

here we can see that a2 is bigger than a1, this means that the object with less mass has a bigger acceleration, then the object with less mass will move faster than the object with more mass.

the device is called “ rocket engine”

i guess it’s a and b