A) The lifter's and the barbell's force are equal and opposite in direction
B) The lifter's force is greater than that of the barbell and in the upward direction
C) The barbell's force is greater than that of the lifter and in the downward direction
It’s proportional to net force
hit its brakes aka as going straight but abruptly stops
hope this helps :)
I think its ethylene, tell me if i'm wrong
The acceleration due to gravity on Earth is 9.8 m/s per second.
That means that an object out in the open gains 9.8 m/s of speed
downward, or loses 9.8 m/s of speed upward, every second.
The ball starts out with 12 m/s of speed upward. It loses 9.8 m/s
of speed upward every second. After (12 / 9.8) = 1.22 seconds,
it has run out of upward speed, and begins moving downward.
