Answer:
1. 26.56m/s.
2. 2.71 secs.
Step-by-step explanation:
The following data were obtained from the question:
Height (h) = 3600cm
Velocity (v) =..?
Time (t) =..?
Next, we shall convert the height, 36000cm to metre (m). This is illustrated below:
100cm = 1m
Therefore, 3600cm = 3600/100 = 36 m
Therefore, the height is 36m.
1. Determination of the velocity with which the stone struck the ground. This is illustrated below:
Acceleration due to gravity (g) = 9.8m/s²
Height (h) = 36m
Velocity (v) =.?
v² = 2gh
v² = 2 x 9.8 x 36
v² = 705.6
Take the square root of both side.
v = √705.6
v = 26.56m/s
Therefore, the velocity with which the stone struck the ground is 26.56m/s.
2. Determination of the time taken for the stone to reach the ground.
Height (h) = 36m
Acceleration due to gravity (g) = 9.8m/s²
Time (t) =.?
t = √(2h/g)
t = √(2 x 36/ 9.8)
t = √(72/9.8)
t = 2.71 secs
Therefore, the time taken for the stone to reach the ground is 2.71 secs