Physics
Physics
Problem
A car starts from rest and moves in a straight line with a constant acceleration of 2.5 m/s² for 4 s. Calculate its speed at the end of this time.Intuitive explanation
This is a straightforward kinematics problem about constant acceleration. The key insight is that with constant acceleration, velocity changes linearly with time—so you just need to apply the definition of acceleration as the rate of change of velocity. Since the car starts from rest, you have a clean initial condition that simplifies the math.
Intuitive explanation
This is a straightforward kinematics problem about constant acceleration. The key insight is that with constant acceleration, velocity changes linearly with time—so you just need to apply the definition of acceleration as the rate of change of velocity. Since the car starts from rest, you have a clean initial condition that simplifies the math.