Question

An object cuts 60 km in 0.8 hour. What is the object's acceleration in (m/s)? Show your work.

a) 25 m/s^2
b) 75 m/s^2
c) 50 m/s^2
d) 30 m/s^2

Answer 1

The object's constant velocity is 20.83 m/s. However, with no information on changes in velocity over time, we cannot calculate acceleration. Additional data on velocity change is required to determine acceleration.

Step-by-step explanation:

To determine the object's acceleration, we need to first find its velocity and then calculate the rate of change of that velocity. The object cuts 60 km in 0.8 hours. To work in SI units, we convert the distance to meters (60 km = 60000 m) and time to seconds (0.8 hours = 2880 seconds).

The velocity (v) is the displacement divided by time, which is 60000 m divided by 2880 s, giving us a velocity of 20.83 m/s. However, the question at hand does not provide information about changes in velocity or time to find acceleration. Therefore, we are unable to calculate the object's acceleration with the given data. Acceleration requires a change in velocity and the time taken for this change.