Hi there! Hopefully this helps!
Answer: A force applied to a machine to an object is the <em>effort force</em>.
Answer: 480 kJ
Explanation: Energy = power · time
E = Pt = 4000 W · 120 s = 480 000 J
Answer: 46 kph
Explanation:
191 ÷ 4.15 = 46.02
It might not be right