A motorcyclist changes the velocity of his bike from 20.0 meters/second to 35.0 meters/second under a constant acceleration of 4.00 meters/second^2. How long does it take the bike to reach the final velocity?

a) 2.02 seconds
b) -2.02 seconds
c) 3.75 seconds
d) -3.75 seconds

Question

A motorcyclist changes the velocity of his bike from 20.0 meters/second to 35.0 meters/second under a constant acceleration of 4.00 meters/second^2. How long does it take the bike to reach the final velocity?

a) 2.02 seconds
b) -2.02 seconds
c) 3.75 seconds
d) -3.75 seconds

anonymous · Answer

$$
v_0=20{\rm m/s}\
v_f=35{\rm m/s}\
a=4{\rm m/s^2}\
t=?
$$
from the definition of acceleration,
$$a=\frac{v_f-v_0}{t}$$

anonymous · Answer

@graceface are u satisfied with @electrokid answer???

anonymous · Answer

I'm still trying to figure it out lol.