A volcano launches a lava bomb straight upward with an initial speed of 28m/s. Taking upward to be the positive direction,find speed and direction of motion of the lava bomb
a) 2.0seconds and b)3.0seconds after it is launched

Question

A volcano launches a lava bomb straight upward with an initial speed of 28m/s. Taking upward to be the positive direction,find speed and direction of motion of the lava bomb 
a) 2.0seconds and b)3.0seconds after it is launched

.sam. · Answer

For the first one,
they have given you 
u=28m/s
v=?
g=-10
t=2s

Can you think of any kinematics equation to solve these?

anonymous · Answer

thanks!! really helped :) my answer came up to be 8.4 with two sig figs!