Lois Lane falls for 10s. Superman catches her, bringing her to a halt in 10cm. Lois has a mass of 50kg. How much force does superman inflict on her spine? * A) 500N
B) 2500000N
C) 25000N
D) Can't solve without superman's mass
show your work please

Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.

What component of earth’s atmosphere exists entirely as a result of photosynthesis?