Suppose a treadmill has an average acceleration of 4.7x10^-3 m/s. a) how much does its speed change after 5min? b) if the treadmill's speed 1.7 m/s, what will its final speed be?

a) Change in the speed = 1.41 m/s

b) The final speed will be 3.11 m/s

Explanation:

Given that

Acceleration, a = 4.7 x 10⁻³ m/s²

a)

We know that

v = u + a t

v=final speed, u=initial speed

t = time, a = acceleration

Change in the speed

v - u = a t

t = 5 min = 5 x 60 s = 300 s

v - u = 4.7 x 10⁻³ x 5 x 60 m/s

v-u = 1.41 m/s

Change in the speed = 1.41 m/s

b)

Given that

u = 1.7 m/s

v-u = 1.41 m/s

v = 1.7 + 1.41 m/s

v=3.11 m/s

The final speed will be 3.11 m/s