2.1-2.13 Scalar and Vectors+Speed Flashcards

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1
Q

What does a scalar quantity have?

A

A magnitude(Size)but no direction

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2
Q

What does a vector have?

A

.Both a size (Magnitude)and a direction

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3
Q

Give three examples of Scalar Quantities

A
.Mass
.Speed
.Distance
.Energy
.Temperature
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4
Q

Give three examples of Vector quantities

A
.Force or weight
.Velocity
.Displacement
.Acceleration
.Momentum
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5
Q

Give the definition for velocity

A

Velocity is the change in distance per second

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6
Q

True or False? Velocity is a speed in a stated direction

A

True

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7
Q

What can you determine from the gradient of a distance time graph?

A

The velocity

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8
Q

How would you measure a constant speed?

A

.Measure distance travelled
.Use stopwatch for time taken
.Use equation speed=Distance/time

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9
Q

How would you measure the average speed?

A

.Work out total distance travelled
.Find the time taken for the whole journey
.Use the equation speed=distance/time

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10
Q

How would you go about using light gates?

A

.Set up two-one at the start, one at the end
.Measure distance between them
.As soon as object passes through the first it will measure time taken to reach the second
.Then use equation speed=distance/time

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11
Q

Why are light gates more accurate?

A

.It removes reaction time and human error with a stopwatch

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12
Q

What is the value for acceleration in freefall?

A

10m/s

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