Worksheet with three physics problems related to acceleration and force calculations.

To solve these problems, we’ll use the formula for acceleration:
a = Δv / Δt, where Δv = v_final - v_initial

---

Problem 1:
Sprinter starts at 10 m/s, ends at 11.2 m/s, time = 3.6 seconds.

Step 1: Find change in velocity (Δv)
Δv = 11.2 m/s - 10 m/s = 1.2 m/s

Step 2: Divide by time
a = 1.2 m/s ÷ 3.6 s = 0.333... m/s²

We can round to two decimal places: 0.33 m/s²

---

Problem 2:
Skier starts from rest → initial velocity = 0 m/s
Final velocity = 16.6 m/s
Time = 9 seconds

Step 1: Δv = 16.6 m/s - 0 m/s = 16.6 m/s

Step 2: a = 16.6 ÷ 9 = 1.844... m/s²

Rounded to two decimal places: 1.84 m/s²

---

Problem 3:
Mass = 7.2 kg
Acceleration = 1.7 m/s²
Use F = ma

F = 7.2 × 1.7 = ?

Let’s calculate:
7 × 1.7 = 11.9
0.2 × 1.7 = 0.34
Total = 11.9 + 0.34 = 12.24 N

---

Final Answer:
1. 0.33 m/s²
2. 1.84 m/s²
3. 12.24 N