It is an Exothermic reaction
Answer:
Explanation:
a )
Work done by force = change in kinetic energy
F x s = ( vf² - vi² ) / 2m
F = ( vf² - vi² ) / 2ms
acceleration = ( vf² - vi² ) / 2m²s
b )
F = ( vf² - vi² ) / 2ms [ calculated above ]
c )
Work done by force
= change in kinetic energy
= ( vf² - vi² ) / 2m
Answer:
A negative acceleration
Explanation:
When thrown, the basketball leaves the hands of the thrower with an initial velocity. This initial velocity is then gradually decelerated (negative acceleration) by drag forces, and its gravitational attraction to the earth, until the ball comes to rest. The acceleration on a thrown basketball is therefore negative.
Answer:
Explanation:
As she danced, Cinderella's foot got sweaty, providing lubrication, and while running her fit simply came out. She was likely barefoot in the slipper, so this makes sense. The Fairy Godmother designed the shoe to come off at the critical moment.