The frictional force acting between the block and the surface will lessen.
Hotel: Trivago (I'm feeling a bit bored, can you tell?)
B. Gobbledygook refers to jargon understood only by specific groups
For the first blank, I would suggest it is Pours out of you, and for the second blank, I'd say diffuse. Hope this is helpful; please let me know if I am correct.
To calculate total mechanical energy, apply the formula:
total mechanical energy = KE + PE
KE = (1/2)mv^2
=(1/2) x 8 x (20)^2 = 1600 J
For PE, use mgh
g ≈ 10 m/s^2
= 8 x 10 x 85 = 6800 J
Thus, total mechanical energy is 1600 + 6800 = 8400 J
