1) The force is measured with a unit called ................... a) kilometer b) meter c) Newtons 2) They are equal forces and in the opposite direction ........................... a) balanced forces. b) unbalanced forces. c) none 3) The forces on a book are ..........................  a) unbalanced forces. b) balanced forces. c) none 4) They are unequal and cause a change in motion .................... a) balanced forces. b) unbalanced forces. c) none 5) The net force of a book on a desk is ......................... a) 10 b) 20 c) zero 6) The total amount of force acting on an object is called ..................... a) balanced forces. b) unbalanced forces. c) net force 7) In this tug-of-war, 2 boys apply 5N pulling force and the other boy applies 2N. What is the net force? a) 1N b) 3 N c) 6 N 8) ......................... is a tool used to measure the strength of the force. a) Spring scale b) Digital scale c) Newtons 9) An object attached to the spring scale exerts a .................... force a) spring b) tension c) electrical 10) The more weight you add to the spring scale, the ..................... the rubber band stretches. a) more b) less c) medium

Topic 1 Lesson 4 Balanced and Unbalanced forces

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