A dummy head of mass 6.1kg in a test helmet is dropped onto a stationary anvil two impact speeds are used of 5.42ms^1 and 4,57ms^-1. The test requires that the deceleration experienced by a dummy head should be dropped in the tests are equivalent 250 x 9.8 (gravity).
(4.4 standard velocity 5.42+0.1 ms flat anvil 4.57+ 0.1 ms theorical equal to 1497mm 1064 drop heights)
i. show the heights from which the helmet and dummy head should be dropped in the tests are equivelent to those stated in 4.4 of the standard. Show your working and state any assumptions you make.
ii. Estimate the maximum force experienced by the head during an acceptable impact.