- Problem 1: The truck's acceleration is calculated using the formula a = (v_f - v_i) / t. With an initial velocity (v_i) of 0 m/s, final velocity (v_f) of 25 m/s, and time (t) of 12 s, the acceleration is (25 - 0) / 12 = 2.08 m/s².
- Problem 2: Steve's average acceleration is found with a = (v_f - v_i) / t. His initial velocity (v_i) is 13 m/s, final velocity (v_f) is 0 m/s (since he stops), and time (t) is 1.3 s. Thus, a = (0 - 13) / 1.3 = -10 m/s². The negative sign indicates deceleration.
- Problem 3: First, convert velocities from km/h to m/s. 88 km/h = 24.44 m/s and 124 km/h = 34.44 m/s. Use the formula t = (v_f - v_i) / a. With v_i = 24.44 m/s, v_f = 34.44 m/s, and a = 1.4 m/s², the time is (34.44 - 24.44) / 1.4 ≈ 7.14 s.
- Problem 4: The problem statement for Freddy the fly is incomplete as the acceleration value and the target velocity are obscured. Therefore, it cannot be solved with the provided information.
Parent Tip: Review the logic above to help your child master the concept of acceleration problems worksheet.
