In a region where there is a uniform electric field that is upward and has magnitude 3.60×10^{4} N/C ,a small object is projected upward with an initial speed of 2.32 m/s . The object travels upward a distance of 6.98 cm in 0.200 s.
What is the object's chargetomass ratio q/m (magnitude and sign)? Assume g = 9.80 m/s2, and ignore air resistance.

Using Force balance on particle
Fnet = Fe  Fg
m*a = q*E  m*g
m*(a + g) = q*E
q/m = (a + g)/E
Using given values:
E = 3.6*10^4 N/C
g = 9.80 m/sec^2
Using kinematic equation
d = u*t + 0.5*a*t^2
d = 6.98 cm = 0.0698 m
0.0698 = 2.32*0.200 + 0.5*a*0.200^2
a = 2*(0.0698  2.32*0.200)/0.200^2
a = 19.71 m/sec^2
So,
q/m = (19.71 + 9.80)/(3.60*10^4)
q/m = 2.75*10^4 C/kg
Since object is moving upward in an electric field that is also upward, So Charge should be negative
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