Science Race: Motion Master

Froggy Jumps

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Speed, forces, energy race

Macky Gabriel Guinto

Philippines

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Science Race: Motion Master


Froggy Jumps Science Race: Motion MasterVersion en ligne Speed, forces, energy race par Macky Gabriel Guinto 1 What quantity measures how fast an object changes position in a given direction? a Velocity b Speed c Acceleration 2 Which law states F = m × a? a Newton's Second Law b Newton's First Law c Conservation of Energy 3 A car speeds up from 0 to 20 m/s in 5 s. What is its average acceleration? a 2 m/s^2 b 4 m/s^2 c 5 m/s^2 4 Which two factors determine kinetic friction between surfaces? a Speed and surface color b Normal force and coefficient of friction c Mass and velocity 5 What is the name of the energy form due to motion? a Potential energy b Kinetic energy c Thermal energy 6 Air resistance on a moving car is an example of which force type? a Applied force b Aerodynamic drag c Frictional force 7 If velocity is constant, what is acceleration? a Zero b Negative c Positive 8 Which quantity is conserved in a isolated horizontal collision with no external forces? a Speed b Kinetic energy c Momentum 9 What happens to kinetic energy if speed doubles? a It doubles b It stays the same c It increases by a factor of four 10 Which factor reduces friction between two surfaces? a Raising temperature b Lubrication or smoother surfaces c Increasing mass