Homework Statement
A small mailbag is released from a helicopter that is descending steadily at 2.68 m/s.
(a) After 4.00 s, what is the speed of the mailbag?
v = ?
Homework Equations
The Attempt at a Solution
Homework Statement
In 1865, Jules Verne proposed sending men to the Moon by firing a space capsule from a 220-m-long cannon with final speed of 10.97 km/s. What would have been the unrealistically large acceleration experienced by the space travelers during their launch? (A human can stand...