2. A girl runs 40m due routh in 40 seconds and then 2om due
north in loreconds. Calculate.
'Dhor average speed.
in hor average
relocity
hi her choingo in velocity for the whole journey! .​

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.

What kind of simple machine is a catapult?

What are the north and south poles of a solenoid change with?