Question

An automobile accelerates from 20 m/s to 50 m/s in 5.0 s. Its acceleration is:

a) 6.0 m/s2
b) 70 m/s2
c) 14 m/s2
d) 150 m/s2​

Answer 1

The average acceleration of an automobile that changes velocity from 20 m/s to 50 m/s in 5.0 seconds is 6.0 m/s².

Step-by-step explanation:

The question posed is asking to calculate the average acceleration of an automobile that increases its velocity from 20 m/s to 50 m/s over a time span of 5.0 seconds. Acceleration can be found using the formula:

a = (v_f - v_i) / t

Where a is acceleration, v_f is the final velocity, v_i is the initial velocity, and t is the time it takes to change from the initial to final velocity.

Substituting the given values into this formula:

a = (50 m/s - 20 m/s) / 5.0 s

a = (30 m/s) / 5.0 s

a = 6.0 m/s2

Therefore, the average acceleration of the automobile is 6.0 m/s2.