A truck starts from rest down a hill with a constant acceleration. It achieves 400 meters in 20 seconds. If the weight of the truck is 7 tons then what will be the force acting on it?
Detailed Explanation:
Given: Initial velocity u = 0 (starts from rest), displacement s = 400 m, time t = 20 s, mass m = 7 tons = 7000 kg.
Step 1 – Find acceleration: Using s = ut + ½at²
400 = 0 + ½ × a × (20)²
400 = 200a
a = 2 m/s²
Step 2 – Calculate force: Using F = ma
F = 7000 × 2
F = 14000 N
Answer: 14000 Newtons
Question 2 of 8 Motion and Laws of Motion
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