Question

A motorized scooter starts from rest and accelerates for 4 seconds at 2 m/s ^ 2. Calculate the avergae velocity of the scooter for the interval 0-4 seconds. Hint Find Vf then find the average in the normal way

Answer 1

The average velocity of the motorized scooter for the interval 0-4 seconds is 4 m/s.

Step-by-step explanation:

To calculate the average velocity of the motorized scooter for the interval 0-4 seconds, we can use the formula:

Average Velocity = (Final Velocity + Initial Velocity) / 2

Since the scooter starts from rest, the initial velocity is 0 m/s. The final velocity can be found using the equation:

Final Velocity = Initial Velocity + Acceleration × Time

Plugging in the values, we have:

Final Velocity = 0 + (2 m/s² × 4 s) = 8 m/s

Therefore, the average velocity of the scooter for the interval 0-4 seconds is:

Average Velocity = (8 m/s + 0 m/s) / 2 = 4 m/s

Answer 2

Step-by-step explanation:

Given

acceleration = 2m/s²

time = 4secs

initial velocity u = 0m/s (motor starts from rest)

Using the equation of motion v = u+at

v = 0+2(4)

v =0+8

v = 8m/s

Hence the final velocity of the car s 8m/s.

Average velocity = distance / time

S = ut + 1/2at²

S = 0+1/2(2)4²

S = 16m

If the distance covered is 16m

Average velocity = 16/4

Average velocity = 4m/s