Which of the following describes an action-reaction pair?
o
O
O
A. Friction slows you down, and the normal force holds you up.
B. You push a car forward, and the car pulls you forward.
O
C. Your hat pushes down on your head, and your feet push down
the ground
O
D. Earth's gravity pulls down on you, and your gravity pulls up on
Earth

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.

It is really hard for me right know

14. a body is projected with velocity vi from a. at the same time another body is projectedvertically upwards from point b withvelocity v2 lies vertically below the highestpoint. both the bodies collide thenv2÷v1is