Option (A ) is correct.
Explanation:
susan is moving with constant velocity, so both the direction and magnitude of the velocity remains same. so the acceleration of susan =0. This is because an object gets accelerated when either the magnitude or direction of the speed changes.
now the force is given by
F= force
m= mass
a= acceleration
Here a =0
so F= 0
so the net force on susan is zero.
These states ofwater are simply physical changes. It has stayed the compound H2O throughout all of them. It had changes in phases but it never changed to anything but water.
Option B: acid+base->water+salt is the equation represents a neutralization reaction.
3) The force of Gravity no longer works, aka you lose gravity.
4) What are the ideas? I can't see them.
Answer: This is true
Explanation: v2=800/25= 32m/s
