A car accelerates from rest to 30m/s in 10s. What is the car's acceleration?
To find the car's acceleration, you can use the formula:
Acceleration = (Final Velocity - Initial Velocity) / Time
Given:
Initial Velocity (u) = 0 m/s
Final Velocity (v) = 30 m/s
Time (t) = 10 s
Using the formula:
Acceleration = (30 m/s - 0 m/s) / 10 s
Acceleration = 30 m/s / 10 s
Acceleration = 3 m/s²
Therefore, the car's acceleration is 3 m/s².
To find the car's acceleration, you need to use the formula:
acceleration = change in velocity / time
In this case, the car's initial velocity (u) is 0 m/s (since it starts from rest), the final velocity (v) is 30 m/s, and the time (t) is 10 seconds.
Therefore, the change in velocity is:
change in velocity = final velocity - initial velocity
change in velocity = 30 m/s - 0 m/s
change in velocity = 30 m/s
Now, plug the values into the formula:
acceleration = change in velocity / time
acceleration = 30 m/s / 10 s
acceleration = 3 m/s²
So, the car's acceleration is 3 m/s².
Divide the velocity change by the time interval required.
You should get 3.0 m/s^2