Advertisements
Advertisements
Question
A body of mass 60 kg is moving with a speed 50 m s_1. Find its kinetic energy.
Advertisements
Solution
mass m = 60 kg
Speed v = 50 mS1
K.E = 1/2 MV2
1/2 × 60 × 50 × 50 = 75000 kgm/s or Joule
K.E = 75/10 × 1000 × 10 = 7.5 × 104 J
APPEARS IN
RELATED QUESTIONS
A boy lifts a luggage from height 2 m to 4 m. The potential energy will become
What is potential energy? State its unit.
Name the form of energy stored in a wound up spring of a watch.
Name the type of energy (kinetic or potential) possessed by the following A moving cricket ball.
Name the type of energy (kinetic or potential) possessed by the following A stone at rest on the top of a building.
Name the type of energy (kinetic or potential) possessed by the following A compressed spring.
Name the type of energy (kinetic or potential) possessed by the following A moving bus.
Give reasons for the following Hammer drives a nail into the wood only when it is lifted up and then struck.
The potential energy of a body of mass 0.5 kg increases by 100 J when it is taken to the top of a tower from ground. If force of gravity on 1 kg is 10 N, what is the height of the tower?
A truck of mass 1000 kg, increases its speed from 36 km h-1 to 72 km h-1. Find the increase is its kinetic energy.
