If "during this time" refers to the 5 second interval mentioned above, then the average acceleration is
Notice that we took the start time to be the start of the 5 second interval and set that to 
. The starting velocity 
is the velocity measured at the start of the interval, and 
is the velocity measured at its end.
So the average velocity over these 5 seconds is
Answer:
Explanation:
given,
speed of cheetah = 27 m/s
time taken = 4 s
mass of cheetah = 110 kg
a = 6.75 m/s²
v² = u² + 2 as
27² = 0 + 2 × 6.75× s
s = 54 m
a) 
b) 
Apply a large force over a short time
It forms a protective and adaptive barrier around a cell and this keeps various bacterial and viral intruders out. They also help in keeping cell systems inside the cell. The shell absorbs viruses and bacteria for nutrients when they do not have a certain strand to get inside the cell or trick it otherwise. Hope this helped!
