BEFORE AFTER
m
M M
MASS, M, MOVES HORIZONTALLY
AT V = (+20 m/s † +03) WHEN AN
INTERNAL EXPLOSION CAUSES IT TO
BREAK APART INTO 2 UNEQUAL PIECES.
mi 7.0 KG AND Ys=(16+123). m/s.
mq 25.0KG
DURING THIS EVENT
NO MASS IS LOST.
BANG
ma
*725
7) USING THE PROPER PHYSICS LAW, FIND THE FINAL VELOCITY FOR ME
125 E QUALS:
(A) (25.6. - 16.83) m/s (B) (25.67 - 12.0 m/s
(c) (16.81
- 12.03.) m/s
(D) (16.8 - 25.63.). Ms
8) THE AMOUNT
OF
ENERGY PRODUCED BY THE EXPLOSION IS CLOSEST TO :
(A) +375 J
(B) + 650 J
(C) + 850 J
CD) +1075J
(E) + 1350 J
(F) NONE
OF THESE ANSWERS ARE WITHIN
200 J
OF THE CORRECT ANSWER

3. a worker pushes a 30.5 kg polished stone along a polished table with a force on bonin a straight line for 5.20 s after starting from rest. there is no friction between thestone and the table. at the end of the table. the stone is hooked to a cable with a lengthof 62.0 cm to rotate it to a rough table to store until they can be picked up. the roughtable has a coefficient of static friction 0.702 with the polished stone. remember that 8= 9.80 m/s2a) what is the speed of the stone when it is hooked to the cable? b) what is the tension in the cable while the stone is rotating? (there is still nofriction)c) how much force is needed to make the stone begin sliding from rest on therough table? ius = 0.70262.0 cm30.5 kg20.5 kg6= 0