Examlex
Two identical 7-kg bowling balls roll toward each other.The one on the left is moving at +4 m/s while the one on the right is moving at −4 m/s.What is the velocity of each ball after they collide elastically?
Q12: I use a rope 3.50 m long
Q24: An ideal gas is confined to a
Q25: A 0.10-kg ball is moving at 7.0
Q42: As I slide a box at constant
Q49: A string attached to an airborne kite
Q52: A rod of length L is hinged
Q74: A turntable has a moment of inertia
Q79: An object when orbiting the Earth at
Q85: An airplane takes off due west at
Q92: Multiplying a 2-significant-figure number by a 4-significant-figure