Answer:
9.8 secs
Explanation:
the ball is in the air so it takes 9.8 secs to get to the ground
2,450 miles. you have to do 700•3.5= 2,450
I think metal, steel and copper.
Answer:
It has potential energy
PE = 15450.75 J
Explanation:
we know its potential energy because the carriage is not moving, although it can
PE = mgh
in this case, m is 75, h is 21, and g is always 9.81
plug these in: PE = (75) (21) (9.81)
your answer: PE = 15450.75 J
