The truck of a passenger car applies brakes at a velocity of 30 m/s and comes to rest 5 seconds later. What is the deceleration?
(30 m/s)/(5s) = 30/5 = 6 m/s^2
It's very important tho it helps me whenever I've physics assignments
Let have the final velocity=30 u=0
D=v-u/t
=30-0/5
=6s
To calculate the deceleration, we can use the formula:
acceleration = (final velocity - initial velocity) / time
Given:
Initial velocity (u) = 30 m/s
Final velocity (v) = 0 m/s
Time (t) = 5 s
We can substitute these values into the formula to calculate the deceleration:
acceleration = (0 - 30) / 5
acceleration = -30 / 5
acceleration = -6 m/s²
Therefore, the deceleration of the truck is -6 m/s². The negative sign indicates that the truck is decelerating (slowing down).