Posted by lora on Monday, June 18, 2012 at 1:18pm.
Upward motion:
v=vₒ-g•t
at the top point
0= vₒ-g•t1,
t1= vₒ/g =34.7/9.8=3.54 s.
h= vₒ•t1 –g•t1²/2=34.7•3.54 - 9.8•3.54²/2 =61.5 m
Downward motion
h=g•t2²/2,
t2=sqrt(2•h/g) =
=sqrt(2•61.5 /9.8) = 3.54 s.
Time (upward) =time (downward)!
t =2•t1=2•3.54 =7.08 s.
Related Questions
physical science - If a ball is thrown straight up at a speed of 27.8 m/s, how ...
Physics - Kevin stands at the edge of a cliff, holding one ball in each hand. He...
physical - A ball is thrown from the window of a high-rise building with an ...
Physics - A red ball is thrown down with an initial speed of 1.3 m/s from a ...
physics - A red ball is thrown down with an initial speed of 1.2 m/s from a ...
physics - A red ball is thrown down with an initial speed of 1.0 m/s from a ...
phy - A blue ball is thrown upward with an initial speed of 20.6 m/s, from a ...
science - a ball is thrown straight upward and returns to the thrower's hand...
college - A blue ball is thrown upward with an initial speed of 19.8 m/s, from ...
Physics - A tennis ball is thrown straight up with an initial speed of 20.0 m/s...
For Further Reading
