Answer:
15.3 m/s
Step-by-step explanation:1) Find the gravitational potential energy using the equation :
2) Then use the equation for kinetic energy to solve for the velocity:
7. 1/10 or 10%
9.5/10
11.5/10
13.9/10
Step-by-step explanation:
90:180, 135:270, 180:360
length = 17cm, width = 10cm
2L + 2w = 54
L = w + 7
Substitute:
2(w + 7) + 2w = 54
2w + 14 + 2w = 54
4w = 40
w = 10
L = 10 + 7 = 17