P2 Forces

Question 1

Speed

Answer 1

Speed(m/s) = Distance(m) / Time(s)

Question 2

Acceleration

Answer 2

Acceleration(m/s^2) = Change in Velocity(m/s) / Time(s)

Question 3

Velocity

Answer 3

Velocity(m/s) = Change in Displacement(m) / Time(s)

Question 4

Final Velocity

Answer 4

Final Velocity(m/s) = 2√(2 x Acceleration(m/s^2) x Distance(m)) + Initial Velocity(m/s)

Question 5

Kinetic Energy

Answer 5

Kinetic Energy = 0.5 x Mass(kg) x (Speed(m/s))^2

Question 6

Force

Answer 6

Force(N) = Mass(kg) x Acceleration(m/s^2)

Question 7

Momentum

Answer 7

Momentum(kg m/s) = Mass(kg) x Velocity(m/s)

Question 8

Work Done

Answer 8

Work Done(J) = Force(N) x Distance(m)

Question 9

Power

Answer 9

Power(W) = Work Done(J) / Time(s)

Question 10

Spring Constant

Answer 10

Spring Constant(N/m) = Force(N) / Extension(m)

Question 11

Energy Transferred (Springs)

Answer 11

Energy Transferred(J) = 0.5 x Spring Constant(N/m) x (Extension(m))^2

Question 12

Gravity Force

Answer 12

Gravity Force(N) = Mass(kg) x Gravitational Field Strength(N/kg)

Question 13

Resultant Force

Answer 13

Resultant Force(N) = Mass(kg) x Acceleration due to Gravity(m/s^2)

Question 14

Moment of a Force

Answer 14

Moment of a Force(N m) = Force(N) x Distance(m)

Question 15

Mechanical Advantage

Answer 15

Mechanical Advantage(N) = Load(N) / Effort(N)

Question 16

Effort

Answer 16

Effort(N) = (Load(N) x Distance from Pivot to Load(m)) / Distance from Pivot to Effort(m)

Question 17

Force

Answer 17

Force(N) = Pressure(Pa) x Area(m^2)