a projectile is fired straight upward at 100 m/s. how fast is it moving at the instant it reaches the top of its trajectory? @Mathematics

Question

a projectile is fired straight upward at 100 m/s. how fast is it moving at the instant it reaches the top of its trajectory?   @Mathematics

anonymous · Answer

If it is fired straight up, then I believe it would be going 0 m/s when it reaches the top of its trajectory.

anonymous · Answer

zero. it stops going up, and starts coming back down. so velocity goes from being positive to negative.  at that instant is is zero.  what ceriona said

anonymous · Answer

for future references... the velocity of any object, in projectile motion, at its maximum height will be zero because at its maximum it has to stop moving momentarily... like a million of milisecond, before it changes its direction. velocity is a vector that has both directions and magnitude.