a car is initially traveling at a speed of 10 m/s. it then accelerates 20 m/s2 for 3 seconds. what is the speed of the car after 3 seconds

Question

fifciol · Answer

$$a=\frac{ v-v_0 }{t}$$$$v=v_0+at$$

anonymous · Answer

Well you could use the formula:$$v _{f}=v _{i}+at$$
Where vf is the final velocity, vi the initial velocity,a the acceleration,and t the time. So plug in the values they gave you 10 m/s for vi, 20 m/s^2 for a,and 3 seconds for t:$$v _{f}=10 m/s+(20 m/s^2)(3 s)$$
First multiply out the "at term":$$v _{f}=10 m/s+60 m/s$$
See how i multiplied the 20 m/s^2 and 3m/s to get an answer in m/s (60m/s)
Simplify:$$v _{f}=70 m/s$$

We get 70 m/s.


ANSWER:70 METERS PER SECOND