Question

A motorcycle has a speed of 30 m / s. After braking, it decelerates with constant deceleration A = -3.0 m / s ^ 2

Calculates its speed after 3.0 s

Answer 1

Answer:21

Step-by-step explanation:

Answer 2

`a = \displaystyle(v-u)/(t)`

`-3 = \displaystyle(v - 30)/(3)`

`v -30 = -9`

`v = 21 m/s`