2. An object is dropped from rest. Calculate its velocity after 2.5s if it is dropped:
a. On Earth, where the acceleration due to gravity is 9.8m/s?.
b. On Mars, where the acceleration due to gravity is 3.8m/s?

Vf=Vi+gt

a. On Earth, where the acceleration due to gravity is 9.8m/s^2?.

Vf=Vi+gt

Vf=0+9.8*2.5

Vf=24.5m/sec

b. On Mars, where the acceleration due to gravity is 3.8m/s^2?

Vf=Vi+gt

Vf=0+3.8*2.5

Vf=9.5m/sec

force is mass*acceleration.

we have a very small mass: 11.4*0.001 kg

if we want 0.035n of force, we need an acceleration:

0.035 = 11.4*0.001*a

a = 0.035/(11.4*0.001) m/s^2