Advertisements
Advertisements
Question
A boy weighing 40 kg makes a high jump of 1.5 m.
What is his kinetic energy at the highest point?
Advertisements
Solution
The kinetic energy at the highest point is zero because at the highest point, velocity of the high jumper becomes zero.
APPEARS IN
RELATED QUESTIONS
Does the transfer of energy take place when you push a huge rock with all your might and fail to move it? Where is the energy you spend going?
State the condition under which the mechanical energy is conserved.
What kind of energy is possessed by the following?
Water stored in the reservoir of a dam __________.
What kind of energy is possessed by the following?
A compressed spring ____________.
A ball of mass 0.5 kg slows down from a speed of 5 m/s so that of 3 m/s. Calculate the change in kinetic energy of the ball. State your answer giving proper units.
Name the device or machine which convert :
Heat energy into kinetic energy (or mechanical energy).
Name the device or machine which convert :
Chemical energy into heat energy.
How much electric energy in kWh is consumed by an electrical appliance of 1000 watts when it is switched on for 60 minutes?
A ball falls to the ground as shown below :
What is the kinetic energy of ball when it hits the ground?
In the case of negative work, the angle between the force and displacement is
