Physics i really need help with this physics question
this was due last week but i had no idea what to do
pls help​

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg

An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?