Question

a rocket of mass 3 into 10 6 kg 100 from a launching pad and acquires vertical velocity of 1 km second and attitude of 25 km calculate potential energy and kinetic energy ​

Answer 1

Mass of the Rocket,m = 3×10⁶ kg

Velocity = 1 km/s = 1000 m/s

Altitude,h= 25 km = 25×1000m

              =25000m

(a)Potential Energy=mgh

               =3 × 10⁶ × 10 × 25000

              = 75 × 10¹⁰ Joule

(b) Kinetic Energy = 1/2mv²

                            =1/2 × 3 × 10⁶ × (1000)²

                        = 1.5 × 10¹² Joule