Answer:
P.E = mgh = 120N
Step-by-step explanation:
v² = u² - 2as
At the top, the velocity is = 0
0² = 4² - 2 x 10 x s
4² = 20s
s = 16/20
s = 0.8metres.
It rose only 0.8metres.
Therefore P.E = 15 x 10 x 0.8
:. P.E = 15 * 8
:. P.E = 120N
Answer:9
Step-by-step explanation:
12-9=3 12-3=9 3+9=12
So C=9
In lowest terms the answer would be 8 1/3
Answer:
30
Step-by-step explanation:
4x+2x=180
6x=180
x=30
