Physics Y1

• What is shown by the gradient of a displacement-time graph?

  The velocity of the object

  
• What is shown by the gradient of a velocity-time graph?

  The acceleration of the object

  
• What is the area of a triangle with base 10 and height 25?

  125
• What does the area underneath a velocity-time graph represent?

  The displacement of the object

  
• What is displacement as a vector?

  Distance moved in a particular direction
• What is the formula for speed?

  distance / time
• What is the formula for velocity?

  displacement / time
• What is the formula for average speed?

  total distance / total time
• What does 'u' stand for in the SUVAT equations?

  Initial velocity
• What does 'v' stand for in the SUVAT equations?

  Final velocity
• What does 'a' stand for in the SUVAT equations?

  Acceleration
• What does 's' stand for in the SUVAT equations?

  Displacement
• What does 't' stand for in the SUVAT equations?

  Time
• What is the SUVAT equation relating final velocity, initial velocity, acceleration and time?

  $v =$$u +$$at$
• What is the SUVAT equation relating final velocity, initial velocity, acceleration and displacement?

  $v^2 =$$u^2 +$$2as$
• What is the SUVAT equation relating displacement, initial velocity, time and acceleration?

  $s =$$ut +$$\frac{1}{2}at^2$
• What is the SUVAT equation relating displacement, final velocity, time and acceleration?

  $s =$$vt - \frac{1}{2}at^2$
• What is the SUVAT equation relating displacement, initial velocity, final velocity, and time?

  $s =$$(\frac{u + v}{2})t$
• How many SUVAT variables do you need to know to solve for the other two?

  Three
• What is 'reaction time' when considering a stopping vehicle?

  Time before the driver applies the brakes
• What is 'thinking distance' when considering a stopping vehicle?

  Distance travelled before the driver presses brake
• What is 'braking distance' when considering a stopping vehicle?

  Distance the car travels while brakes applied
• What is the formula for 'stopping distance'?

  Thinking distance + Braking distance
• What is the acceleration due to gravity near Earth's surface?

  $9.81 ms^{-2}$
• What is the value of g if an object is accelerating downwards?

  $g =$$+$$9.81 ms^{-2}$
• What is the value of g if an object is decelerating upwards?

  $g =$$-9.81 ms^{-2}$
• A ball is thrown upwards, what is its velocity at its maximum height?

  $0 ms^{-1}$
• In projectile motion, what parameter is the same in both vertical and horizontal directions?

  Time
• In projectile motion, which SUVAT variable is constant in the horizontal direction?

  Speed
• What formula is used for the horizontal direction of projectiles, since there is constant speed?

  Speed = Distance/Time
• What is drag?

  Frictional force on object through fluid
• What is the typical structure of the formula for drag force?

  $f =$$\kappa v^n$
• In the drag force formula, what does $\kappa$ represent?


  Aerodynamic properties constant
• In the drag force formula, what does $v$ represent?


  Velocity of object
• What causes motion according to Newton's Laws?

  Forces
• What unit are forces measured in?

  Newtons (N)
• What does the presence of energy signify about an object?

  It can store potential energy
• What is the formula for Weight (W)?

  $W =$$mg$
• What is friction?

  Force opposing the motion of an object
• What direction is the normal-reaction force in?

  Perpendicular to the floor