Physics
posted by Jamie .
If you throw a ball straight upward at a speed of 24 m/s, how long will it take to reach zero speed? How long will it take to return to its starting point? How fast will it be going when it returns to its starting point?

v = v0  1/2*g*t^2
where v is speed as a function of time, v0 is the inital speed, and g is the acceleration due to gravity
v = 24  4.9*t^2 = 0
Solve for t
When it returns to its starting point, the time will be 2*t, using t from the first question. Calculate v at this time (It should be 24 m/s)
Respond to this Question
Similar Questions

physics
a ball is thrown vertically upward with a speed 25.0m/s (a)How high does it rise? 
Physics
A tennis ball is thrown vertically upward with an initial velocity of +8.0 m/s. a. what will the ball's speed be when it returns to its starting point? 
conceptual physics
if you throw a ball straight upward at a speed of 10 m/s, how long will it take to reach zero speed? 
physics
If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point? 
physics
If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point? 
physics
If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point? 
physics
A ball is thrown vertically upward with a speed of 23.7 m/s from a height of 2.0 m. How long does it take to reach its high est point? 
Physics please help!!!!!!!
A ball is thrown vertically upward (assumed to be the positive direction) with a speed of 21.0 m/s from a height of 9.0 m. (a) How high does the ball rise from its original position? 
Physics
A tennis ball is thrown vertically upward with an initial velocity of 8.0 m/s. a) what will the ball's speed be when it returns to its starting point. b) how long will the ball take to reach it's starting point? 
Physics
Standing on a bridge, you throw a 3.0 g stone straight upward with speed of 2.5 m/s. How long does it take to return to the original position?