It is permissible to ask an applicant to state his or her age if he or she is less than 18. If an employer needs the date of birth for internal reasons, i.e., computations with respect to a pension or profit-sharing plan, this information can be obtained after the person is hired.
Once again, a cavalletti is not a jump, so your horse should be able to canter over each one in a normal canter stride. The distance between the two cavalletti will depend somewhat on how big your gelding is; set them in increments of 10 or 11 feet for an average-strided horse. hunter judge and equestrian coach explains how to get the right distance when jumping your horse.
The faster your muscles contract the more explosive your leap and the higher you will get off the ground  its a simple as that. Yes, you need to be strong enough to get your body off the ground. But any improvements in jumping height after that will largely depend on the speed your muscles generate.