If a car starts at rest and accelerates to 40 m/s in a time of 10 s. What is the acceleration of the car?
\large acceleration=\frac{v_{final}-v_{initial}}{time}
a. -4 m/s2
b. 4 m/s
c. 4 m/s2
d. 400 m/s2
The equation to find acceleration is:
acceleration = (v_final - v_initial) / time
In this case, the final velocity (v_final) is 40 m/s, the initial velocity (v_initial) is 0 m/s, and the time is 10 s.
Substituting these values into the equation:
acceleration = (40 m/s - 0 m/s) / 10 s
= 40 m/s / 10 s
= 4 m/s^2
Therefore, the acceleration of the car is 4 m/s^2.
The correct answer is c. 4 m/s^2.