2.1-2.13 Scalar and Vectors+Speed

Question 1

What does a scalar quantity have?

Answer 1

A magnitude(Size)but no direction

Question 2

What does a vector have?

Answer 2

.Both a size (Magnitude)and a direction

Question 3

Give three examples of Scalar Quantities

Answer 3

.Mass
.Speed
.Distance
.Energy
.Temperature

Question 4

Give three examples of Vector quantities

Answer 4

.Force or weight
.Velocity
.Displacement
.Acceleration
.Momentum

Question 5

Give the definition for velocity

Answer 5

Velocity is the change in distance per second

Question 6

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

Answer 6

True

Question 7

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

Answer 7

The velocity

Question 8

How would you measure a constant speed?

Answer 8

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

Question 9

How would you measure the average speed?

Answer 9

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

Question 10

How would you go about using light gates?

Answer 10

.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

Question 11

Why are light gates more accurate?

Answer 11

.It removes reaction time and human error with a stopwatch

Question 12

What is the value for acceleration in freefall?

Answer 12

10m/s