Mechanical Energy

Match it! Select the correct answer from the pull down...Good luck!

In a roller coaster when you feel that you are being lifted out of the seat, the value of 'g' forces is ___.

The packed marbles represent molecules in a ____ substance

An iron sphere of mass 30 kg has the same diameter as an aluminium sphere whose mass is 10.5 kg. The spheres are dropped simultaneously from a cliff. When they are 10 m from the ground, they have the same _______.

A trebuchet launches a projectile by converting ______.

Calculate the kinetic energy of a 30 kg mass moving with a speed of 4m/s.

Rajiv is racing down Gandhi street at 32.8 m/s in his 1510-kg mini truck. Spotting a police with a radar gun, he quickly slows down to a legal speed of 20.1 m/s. Determine his initial and final kinetic energy.

A bicycle has a kinetic energy of 124 J. What kinetic energy would the bicycle have if it had, twice the mass and was moving at the same speed? It had the same mass and was moving with twice the speed?

The P.E. of a body at a certain height is 300 J. The kinetic energy possessed by it when it just touches the surface of the earth is _____.