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Physics Assessment

Physics unit 1 assessment containing forces and graphs.

QuestionAnswer
What is a distance time graph and why do we use it ? A distance-time graph shows how the distance of an object (from a point) varies over time
What is the formula of speed? Speed = Distance / Time
What is a Trundle wheel ? A trundle wheel is ideal for measuring long distances
What are the units of acceleration ? The units of acceleration is m/s2
How do we calculate acceleration in a Velocity time graph? By the gradient of the line.
What does a horizontal line represent in a velocity time graph? It represents constant speed
How can forces affect different kinds of bodies? They can change their speed They can change their direction They can change their shape
What is the formula of acceleration in graphs? Acceleration = final velocity - initial velocity / Time taken
What is a vector? Give examples Vectors are quantities that both have magnitude and direction E.g. Velocity , force and weight are vectors.
What is a scaler? Give examples A scaler is a quantity which only has a magnitude. E.g. Distance , speed and time are scaler quantities
What is the formula we use to work out the weight of an object? Weight = mass x gravitational force
What opposes the motion of an object ? Friction
What is resultant force? Resultant force is adding forces which go in the same direction or subtracting forces who go at opposite direction.
What is the formula of force? Force = mass x acceleration
Created by: Moheymun
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