a = change in velocity/change in time
= (14 -0) / 10
2.) zero
3.) (1/2) m v^2 = m g h
so
v = sqrt (2 g h)
1.) What is the acceleration of a car that increases its velocity from 0 to +14m/s in 10s?
2.) What is the acceleration of a car that maintains a constant velocity of - 14m/s for 10s?
3.) Seagulls are often observed dropping clams and other shellfish from a height to the rocks below, as a mean of opening the shells. If a seagull drops a shell from rest at a height of 14.0m, how fast is the shell moving when it hits the rocks?
1 answer