P9: Motion (Y10 - Autumn 2)

Question 1

🟢 What does SUVAT stand for?

Answer 1

S - Displacement (distance in meters)
U - Unitial Velocity (m/s)
V - Final Velocity (m/s)
A - Acceleration (m/s^2)
T - Time (time in seconds)

Question 2

🟢 Helpful Extra Equations:

Answer 2

1. Force = Mass x Acceleration

2. Weight = Mass x Gravitational Field Strength

Question 3

🟢 SUVAT Equations to Memorise

Answer 3

1. Acceleration = Final Velocity - Initial Velocity / Time
   (a = v - u/t)
2. Final Velocity = Displacement / Time
   (v = s/t)
3. Final Velocity^2 - Initial Velocity^2 = 2 x Acceleration x Displacement
   (2as = v^2 - u^2 )

Question 4

🟢 Kinetic Energy Equation

Answer 4

Kinetic Energy = 1/2 Mass x Velocity ^2

Ek = 1/2 mv^2

Question 5

🟢 Acceleration Definition

Answer 5

Acceleration is the rate of increase in velocity in terms of units per time.

Question 6

🟢 Speed Equation

Answer 6

Gradient = Change in Distance / Change in Time

Speed = Distance / Time

Question 7

🟢 Acceleration Equation

Answer 7

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

Question 8

🟢 Gradient of the Line Equation

Answer 8

Gradient of the Line = Rise / Run

Or,

Gradient of the Line = Height of the Triangle / Base of the Triangle

Question 9

🟢 How do you find the Gradient of the Line when it is curved?

Answer 9

You can find the speed at any point in the line by drawing a tangnt to the line at that point. The tangent to the curve is a straight line that touches the curve without cutting through it. The gradient of the tangent is equal to the speed of the object at that instant in time.

Question 10

🟢 How do you find the Distance travelled in a Velocity Time Graph

Answer 10

To find the distance travelled from the graph, remeber that the area under a line on a velocity-time graph represents the distnace travelled. This means the distance travelled is the area of the square, under where the gradient starts, added onto the triangle of the gradient(s).

Question 11

🟢 What does the Gradient of a Velocity Time Graph represent?

Answer 11

Acceleration (m/s^2)

Question 12

🟢 What does the Gradient of a Distance Time Graph represent?

Answer 12

Velocity (m/s)

Question 13

🟢 What is An Independant Variable? (+What axis does it go on)

Answer 13

An Independent Variable is the variable that is altered during a scientific experiment. It goes on the x-axis, as it is not affected by the independant variable (e.g time).

Question 14

🟢 What is the Dependant Variable (+What axis it goes on)

Answer 14

A Dependant Variable is the variable being tested or measured during a scientific experiment. It goes on the y-axis, and could be something like the distance or the velocity for example.