Lesson: Acceleration over Time Physics • 9th Grade
In this lesson, we will learn how to analyze the motion of objects that change their velocity in some amount of time, by using the formula for acceleration, a = ∆v/∆t.
A train has a velocity of 35 m/s when it reduces its engine power, and after 5 seconds the train has a velocity of 11.5 m/s. What is the train’s average acceleration in its direction of motion?
A skydiver accelerates downward at a rate of 9.8 m/s2. How much does their downward velocity increase in 0.67 seconds? Round your answer to two decimal places.
A cyclist accelerates at 2.3 m/s2. How much time is needed for the cyclist to increase their velocity by 9.43 m/s?