Answer:
The electrostatic force is the force that exists between electrically charged particles or objects at rest.
Well you of course have different kinetic energies with the two speeds.
Kinetic energy = (1/2)*mass*velocity^2
The vehicle's mass is the same in both cases, so we can ignore that as well as 1/2 since it's a constant.
So we have (30)^2 vs (60^2)
which is 900 vs 3600
So having 60 mph compared to 30 mph is 4 times the kinetic energy.
It moves backwards do to the impact. this is because force can not be created nor destroyed so it is transferred.<span />
