Number 4 is c , number 5 is a , number 6 is d and 7 is a
The net force on the acorn is less than the force of gravity.
Answer:
a) Vf = 27.13 m/s
b) It would have been the same
Explanation:
On the y-axis:


Solving for t:
t1 = 0.67s t2= -2.4s
Discarding the negative value and using the positive one to calculate the velocity:


So, the module of the velocity will be:


If you throw it above horizontal, it would go up first, and when it reached the initial height, the velocity would be the same at the throwing instant. And starting then, the movement will be the same.