A ball is thrown straight upward with a velocity
→
v
0 and in a time t reaches the top of its flight path, which is a displacement
→
y
above the launch point. With a launch velocity of 2
→
v
0, what would be the time required to reach the top of its flight path and what would be the displacement of the top point above the launch point? (a) 4t and 2
→
y
, (b) 2t and 4
→
y
, (c) 2t and 2
→
y
, (d) 4t and 4
→
y
, (e) t and 2
→
y
.

If forces acting on an object are unbalanced. true or false

An electron is ejected into a horizontal uniform e⃗ field at a parallel horizontal velocity of v0. assume the electron's initial position x0, initial velocity v0, time t, magnitude of electric field e, electron's mass m, and the magnitude of the electron's charge |e|. ignore the force that earth exerts on the electron. assume the e⃗ field is in the same direction as the initial velocity. part a define the equation for the electron's velocity. express your answer in terms of the variables v0, |e|, t, e, and m.

Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves.