Home
Class 9
PHYSICS
A rocket of 3xx10^(6) kg mass takes of f...

A rocket of `3xx10^(6)` kg mass takes of from a launching pad and acquires a vertical velocity of 1 km/s at an altitude of 25 km. Calculate a. the potential energy and b. the kinetic energy. (Take the value of `g=10m//s^(2)`)

Text Solution

Verified by Experts

Mass of the rocket `m=3xx10^(6)kg`
velocity acquired by the rocket
`v=1km//s`
=1000m/s
Altitutde of the rocket h=25km `g=10m//s^(2)`
a.Potential energy of the rocket =mgh
`=3xx10^(6)xx10=25000`
`=75xx10^(10)J`
`=7.5xx10^(11)J`
b. Kinetic energy of the rocket `=1/2mv^(2)`
`=1/2xx3xx10^(6)xx(1000)^(2)J`
`=1.5xx10^(6)xx(1000)^(2)J`
`=1.5xx10^(6)xx10^(6)J`
`=1.5xx10^(12)J`
Promotional Banner

Similar Questions

Explore conceptually related problems

A rocket of 3 xx10^6 kg mass takes off from a launching pad and acquires a vertical velocity of 1 km/s at an altitude of 25 km. Calculate the potential energy, and the kinetic energy.

A boy of mass 40 kg climbs vertically upwards on a coconut tree to a height of 10m. Calculate the potential energy gained.

A ball of mass 0.5 kg slows down from a speed of 5ms^-1 to 3ms^-1 , calculate the change in the kinetic energy of the ball.

A 5 kg ball is trhown up with a speed of 10 m/s. Find its kinetic energy at the time of throw.

Oif a force 20 N is applied on a body of mass 5 kg at rest then find the kinetic energy of the body after 10s.

In the nucleus of _(92) U^(238) , two porotns at a distance of 6xx10^-1 m . Calculate their electrostatic potential energy.

A body of mass 2 kg is thrown up at a velocity of 10 ms. Find the kinetic energy of the body of the time of throw. Also find the potential energy of the body at highest point.

Two point charges 4Q and Q are separated by a distance of 1 m in air. Also calculate the electrostatic potential energy of the system of two charges, taking Q = 2 xx 10^-7C .