A truck decelerates to rest with an acceleration of −4 m/s2 over a displacement of 50 m. What is the initial velocity of the truck?
To find the initial velocity of the truck, we can use the kinematic equation:
Where:
is the final velocity (0 m/s, since the truck comes to rest)
is the initial velocity (unknown)
is the acceleration (-4 m/s²)
is the displacement (50 m)
Rearranging the formula to solve for :
Substituting in the values:
Click "Show Answer" to reveal the answer and analysis
Access thousands of practice questions with detailed explanations on Scholardog.