Answer: Slope (m) =ΔY/ΔX=5/2=2.5
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Answer:
Therefore,
The ball strike the ground at time , t = 6 s
Step-by-step explanation:
Given:
The equation for the ball’s height, h, at time t seconds is
To Find:
time, t = ? (When the ball strike the ground)
Solution:
When the ball strike the ground height, h will be ZERO,
So put h = 0 in above given equation for time,
Which is a Quadratic Equation
Dividing throughout by - 4.9 we get
On Factorizing, splitting the middle term we get
As time cannot be negative,
t = 6 s
Therefore,
The ball strike the ground at time , t = 6 s