Forces & Energy Quiz

Froggy Jumps

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Forces, friction, gravity, types of motion, scalar and vector quantities, examples,

Sashi Kala

India

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Forces & Energy Quiz


Froggy Jumps Forces & Energy QuizVersion en ligne Forces, friction, gravity, types of motion, scalar and vector quantities, examples, par Sashi Kala 1 Which force opposes motion between two surfaces in contact? a Normal force b Friction c Air resistance 2 Which non-contact force attracts masses toward each other? a Magnetic force b Friction c Gravitation 3 What is a free-body diagram? a A velocity-time graph b A diagram showing all forces acting on an object c A diagram of energy transfer 4 Terminal velocity occurs when the net force on an object is what? a Zero (drag equals weight) b Maximum c Double that of weight 5 What is the formula for kinetic energy (KE)? a KE = 1/2 m v^2 b KE = mv c PE = mgh 6 What is potential energy (PE) relative to? a Velocity b A reference point (height) c Mass 7 What distinguishes kinetic energy from potential energy? a KE is energy of motion; PE is stored energy b KE is stored; PE is motion c PE is energy of motion; KE is stored energy 8 What is static friction? a Friction is air resistance only b Friction always causes motion c Friction that prevents motion up to a limit 9 Which forces can appear on a free-body diagram of a block on a surface? a Only gravity b Only normal force and gravity c Gravity, normal force, friction, applied force 10 What determines terminal velocity? a Balance of drag force and weight b Height of the object c Amount of friction with the air