A movie director wants a scene in which a car appears to fly off a cliff at $50 \;\mathrm{mph}.$ To simulate this, the director will make a $1/100$ scale model of a car and cliff, and have the model car fly off the model cliff. By what factor should the film be sped up or slowed down in order to look realistic, and what should the real speed of the toy car be as it approaches the cliff

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.  

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.