Answer:
option c is correct
Explanation:
we know that time rate of change of velocity is called acceleration
so a=v/t
a=12/4
a=3m/s²
Physical fitness is your ability to carry out tasks without undue fatigue. Learn about the components of physical fitness: cardio respiratory endurance, muscle strength, muscle endurance, flexibility and body composition and why they are important.
Both are objects and contain matter and mass. both are made of atoms, and produce reactions.
gravitational Potential energy is given by
here we have
m = 200 kg
h = 21000 m
now we will have
so GPE of balloon will be 41160000 J above the given height from ground
