Physics Equations Questions & Answers

Physics Equations Questions & Answers Acceleration (m/s2) - CORRECT ANSWER- = change in velocity (m/s)/time (s) Charge flow (C) - CORRECT ANSWER- = current (A) x time (s) Density (kg/m3) - CORRECT ANSWER- = mass (kg) / volume (m3) Distance Travelled (m) - CORRECT ANSWER- = speed (m/s) x time (s) Efficiency (J) - CORRECT ANSWER- useful output energy (J) / total input energy (J) Energy Transferred (J) - CORRECT ANSWER- = charge (C) x potential difference (V) Energy transferred (JkWh) - CORRECT ANSWER- = Energy transferred (JkWh) = power (WkW) x time (s, h) Force (N) - CORRECT ANSWER- = mass (kg) x acceleration (m/s2 ) Force exerted by a spring (N) - CORRECT ANSWER- = extension (m) x spring constant (N/m) Gravity Force (sometimes called Weight)(N) - CORRECT ANSWER- = mass (kg) x gravitational field strength g ( N/kg)