Which has more kinetic energy: a 0.0012-kg bullet traveling at 395 m/s or a 6.0 107-kg ocean liner traveling at 13 m/s (25 knots)? the bullet has greater kinetic energy --------------or---------------------- the ocean liner has greater kinetic energy Justify your answer. Ek-bullet = _______Joules Ek-ocean liner = _______Joules
Justify your answer.
| Ek-bullet | = | _______Joules |
| Ek-ocean liner | = | _______Joules |
______________________________________________________________________________
(a) What is the kinetic energy in joules of a 1150-kg automobile traveling at 79 km/h?
=_______ Joules
(b) How much work would have to be done to bring a 1150-kg automobile traveling at 79 km/h to a stop?
=_________Joules
________________________________________________________________________________
How much work does gravity do on a 0.110-kg ball falling from a height of 24.0 m? (Neglect air resistance.)
=__________ Joules
_______________________________________________________________________________
How would the force of gravity between two masses be affected if the separation distance between them were the following? (Assume F2 represents the new force and F1 represents the original force.)
F2 / F1 = _______
(b) one-fifth the original distance
F2 / F1 = ________
=_________ km/h
(b) What is its instantaneous velocity?
=_________ km/h
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