10. A sphere at rest begins to spin with constant angular acceleration. When its angular displacement is 10
radians, its angular velocity is 5 radians per second.
What is its angular acceleration?
A) 0.25 rad/s2 B) 0.5 rad/s2
C) 1 rad/s2
D) 1.25 rad/s2
E) 2.5 rad/s2

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.