What is the initial velocity of a ball thrown straight up?

[chemguy990]

A ball of unknown mass is thrown straight up.

*maximum height reached in 5.78 seconds
*acceleration due to gravity 9.8 m/s2

Calculate initial velocity in m/s

Would the initial velocity be 9.8 m/s2 x 5.78 s: 56.644 m/s?

Thats all the information given.

 

[rocomath]

A ball of unknown mass is thrown straight up.

*maximum height reached in 5.78 seconds
*acceleration due to gravity 9.8 m/s2

Calculate initial velocity in m/s

Would the initial velocity be 9.8 m/s2 x 5.78 s: 56.644 m/s?

Thats all the information given.

that's what i got

v_y=v_{0y}+gt

-v_{0y}=gt

 

[Inonin]

Not to be redundant with the other post but i got the same=P

V initial x (Acceleration)(time) = V final

At the highest point, the velocity is 0 so

V initial + (-9.8m/s^2)(5.78s) = 0

V initial = 56.644 m/s

 

[rocomath]

Not to be redundant with the other post but i got the same=P

V initial x (Acceleration)(time) = V final

At the highest point, the velocity is 0 so

V initial + (-9.8m/s^2)(5.78s) = 0

V initial = 56.644 m/s

no prob :) so that's 3 for 56.644 m/s!