In a region of space there is an electric field that points in the y-direction w

Question

In a region of space there is an electric field that points in the y-direction with component Ey = 28000 N/C. A ball of mass 1.5 x 10-7 kg and charge +324 nC has an initial velocity along the x-direction with vx0 = 140 m/s.
(a) What is the acceleration of the ball. You can neglect the force of gravity.
ax =
ay =
(b) How much time elapses before the ball has moved 0.18 m in the x-direction?

(c) What is the y-component of the position of the ball at this time?

(d) What are the components of velocity at this time?
vx =
vy =
(e) What is the direction of the velocity, an angle measured from the x-axis?
°
(f) What is the name of the path travelled by the ball?

Explanation / Answer

a) ax=0 ay=qE/m=60480 b)t=0.18/140=1.28 millisec c)y=1/2ay t^2=0.05 d)vx=140 vy=77.4144 e)28.9 degree f)cycloid

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