A nail is hit with a hammer. Which type of contact force has been applied?
A.
spring force
B.
impact force
C.
friction force
D.
tension force

Ball b is hanging from an inextensible cord. an identical ball a is released from rest when it is just touching the cord and drops through the vertical distance h a 5 8 in. before striking ball b. assuming e 5 0.9 and no friction, determine the resulting maximum vertical displacement h b of the ball b

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount