The speed of a car traveling on a straight road increases from 63 m/s to 75 m/s in 4.2 s. The car's acceleration is ____ m/s^2. (hint: report your answer using two significant digits, and remember to round your answer, if appropriate. For example 3.451 would be reported as 3.5)
Answers
Answered by
1
Answer:
a=2.79 or 2.8 m/s²
Explanation:
Initial velocity, u= 63 m/s
Final velocity, v= 75 m/s
Time, t = 4.2s
acceleration,a =?
To find the acceleration, put the above values in the first equation of motion
v=u+at ,
75=63+a*4.2
75-63=a*4.2
12=a*4.3
12/4.3=a
a=2.79 or 2.8 m/s²
Similar questions