Answer: find the answer in the explanation
Explanation:
Average velocity is the average value of magnitude of initial velocity and final velocity.
If U = initial velocity and V = final velocity, then average velocity can be expressed as
Average velocity = ( U + V )/2
A vehicle who takes 60 minutes to cover 30 miles north and then 30 miles south and end up at the same place, has an average speed of 60 miles divided by 60 minutes, or 1 mile per minute.
Instantaneous velocity is the distance covered in a specific direction per time taken. Instantaneous velocity can be expressed as
Velocity = displacement/ time.
Uniform velocity occurs when we have a constant velocity. That is, when velocity does not change. When a vehicle travels in equal distances in equal intervals of time.
Vf = Vi + at
Vf = 0 + 5.4•28
= 151.2m/s..
not sure if its right
Well....t usually stands for time and the unit seconds proves that
Answer:
a) 2.3 m/s^2
b) 33.3 s
c) 803 m
d) 0 m/s
Explanation:
We need to apply the accelerated motion formulas.
The acceleration is given by:
we need to calculate the time the cheetah takes to stop when it starts to decelerate:
We need to calculate the displacement for all of the stages:
stage 1:
stage 2:
stage 3:
The total displacement is given by:
the final velocity of the cheetah is zero because the cheetah decelerates until stop.
