a car travels in a straight line for 3 h at a constant speed of 53 km/h. what is the acceraleration? answer in units of m/s2.

To find the acceleration, we first need to understand the formula for acceleration, which is:

acceleration = (final velocity - initial velocity) / time

In this case, the car is traveling at a constant speed of 53 km/h for 3 hours. Since there is no change in velocity, the acceleration is zero. Therefore, the acceleration in units of m/s^2 is 0 m/s^2.