80 units
Step-by-step explanation:
Step 1 :
Given,
The function representing the height is y = 4x^2-32x+80
where the x represents the time after they jumped and y represents their height above ground.
We need to find the platform's height.
Step 2 :
Since x represents the time after they jumped, x = 0 when they have not started jumping and the corresponding y will give the height before they start jumping which would be the height of the platform
Step 3:
When x = 0 we have
y = 0-0+80 = 80
So the height of the given platform is 80 units.
Answer:
hope it helps
Step-by-step explanation::
a) Consider a body having initial velocity 'u'. Suppose it is subjected to a uniform acceleration 'a' so that after time 't' its final velocity becomes 'v'. Now, from the definition of acceleration we know that:
Acceleration = Time taken Change in velocity or Acceleration = time taken
Final velocity- Initial velocity
So, a= t
v−u
at=v−u and, v=u + at
where v= final velocity of the body
u= initial velocity of the body
a= acceleration
and t= time taken
(b) Initial velocity, u=54km/h=15m/s
Final velocity, v=0m/s
Time, t=8s
Acceleration, a=?
a= t
v−u
= 8
0−15
= 8
−15
m/s 2
=−1.875m/s 2
No because the first four value is 4000 the second four value is 40 if it was it would be 400 ten time as 40
Answer:
5
Step-by-step explanation:
5
