A molecule, would be the correct answer
Answer: 9496200 joules
Explanation:
Gravitational potential energy, GPE is the energy possessed by the moving plane since it moves against gravity.
Thus, GPE = Mass m x Acceleration due to gravity g x Height h
Since Mass = 1900kg
g = 9.8m/s^2
h = 510 metres (units of height is metres)
Thus, GPE = 1900kg x 9.8m/s^2 x 510m
GPE = 9496200 joules
Thus, the gravitational potential energy of the airplane is 9496200 joules
1) PE=mgh
mass 50 kg; height 3; g 9.81
50×3×9.81=1471.5 J
2. The student is opposing gravity force so
Fgrav=m×g
50 × 9.81= 490N
Work=force×displacement
490×3=1470J(this should always be the same as the potential energy)
3.Power=work×time
4410 W=1470×3
4. Greater than: power is dependent on work, work is dependent on force, force is dependent on weight,
Ball hits the floor at 1.6 m below the initial position
So here we can say that
also it will hit at horizontal distance of 5.2 m
let say its velocity in x and y directions are given as
now we can say
from above two equations
as we know that it is projected at an angle of 35 degree
so we know that
now we have
also we can find vertical component of velocity as
now we will find net velocity as
now by energy conservation we can say
so spring constant is 37.2 N/m
