Part(a): The average acceleration is during the first 6s.
Part(b): The average acceleration from 6s to 8s is zero.
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
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.
1485m = (330m/s) t
1485/330 = 4.5s
4.5 s is the amount of time! Hope this helped.
Y will experience the most acceleration
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.
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