Can anyone answer these questions plzzzzzzz ☝☝☝☝
Answers
Explanation:
1) potential energy will be more and
kinetic energy will be 0
& when we release it, potential energy
starts to change in kinetic energy.
2) Because of 3rd law of motion.
3) floor exert pressure on ball so ball
gets kinetic energy.
4) Kinetic energy will change into
potential energy.
Answer:
WORK POWER AND ENERGY
Explanation:
★ PING PONG BALL ★
★1> POTENTIAL ENERGY and KINETIC ENERGY
» When ball was steady at some HIEGHT above ground .. It had " POTENTIAL ENERGY " as ;
" mgh = Potential Energy "
» When ball is Released all the " STORED POTENTIAL ENERGY " gets converted into___ " KINETIC ENERGY " .
» As is sets up in motion The Potential Energy gives it " VELOCITY" and also
" GRAVITATIONAL FORCE " acts to... ;
→Bring ball to ground ....... ←
★ When ball hits ground it loses it's KINETIC ENERGY .. in form of sound or friction pull.. ★
_________________________________________
★★ 2 > BOUNCING BACK OF BALL
AND
★★ 3 > KINETIC ENERGY FOR MOTION
» AS mentioned above ; Ball loses some energy in interaction with ground .
» When ball hits ground ; it behaves like
» When ball hits ground ; it behaves like " ACTION - REACTION PAIR "
{ NEWTON'S THIRD LAW OF MOTION } .
» So ; The ground imparts Force on ball ; And ball too imparts Force on ground and Cancels each other... so { Fnet = 0 } .
» BALL BOUNCES BACK DUE TO REMAINING KINETIC ENERGY CONSERVED DURING INTERACTION WITH GROUND .
_________________________________________
★★ 4 > WHEN BALL BECOMES STEADY ...
» When KINETIC ENERGY of the ball gets used up.. it stops bouncing and Tries to remain in Steady state.
» At steady state there is no " ENERGY PRESENT " { IF YOU CONSIDER GROUND AS REFERENCE } .
★★________ ENERGY NIETHER BE CREATED NOR DESTROYED ONLY TRANSMITTED _______★★