Answer:
Part(a): The average acceleration is 
during the first 6s.
Part(b): The average acceleration from 6s to 8s is zero.
Explanation:
Part(a):
The average acceleration is defined as the rate at which velocity is changing with respect to time. So if '
', '
' and '
' represents the initial velocity, final velocity, and average acceleration of a particle, then mathematically
where '
' is the time taken by the particle to achieve the velocity '' starting from initial velocity ''
Given in the problem, 
.
So the average acceleration() during the first 6 s will be
Part(b):
During the time between 6 s to 8 s, as mentioned in the problem, the sprinter maintains the constant velocity. So the average acceleration during this time interval will be zero.
D =vt
so
1485m = (330m/s) t
1485/330 = 4.5s
4.5 s is the amount of time! Hope this helped.
Answer:
Y will experience the most acceleration
Explanation:
Because using F=ma, you can rearrange the formula to show that acceleration equals force over mass. You then do the calculations for each of the objects, and y will be your answer.
Answer:
water
Explanation:
coz out of the choices water is the only one that is not an element.
water formula is H2O
You will need too know the mass and velocity
