Question

To test a bicycle helmet with a mass of 0.20 kg, it is placed at a height of 1.4 m from the ground and dropped onto a force detector placed on the ground. What is the speed of the bicycle helmet just before it hits the force detector on the ground?

Answer 1

Answer

the speed of the bicycle helmet just before it hits the force detector on the ground is given by

$v=\sqrt{2gh}=\sqrt{2\times9.8\times1.4}\\=5.24m/s$