P1.2

Question 1

What is speed

Answer 1

Distance travelled per unit time
v=s/t

Question 2

Equation for average speed

Answer 2

average speed = total distance/total time taken

Question 3

On a distance time graph what do these things mean
a) diagonal line going up
b) horizontal line
c) diagonal line going down
d) steeper diagonal line going up
e) curved line going up
f) curved line going down

Answer 3

a) constant speed
b) stationary
c) constant speed
d) constant speed
e) accelerating
f) decelerating

Question 4

On a speed time graph what do these things mean
a) diagonal line going up
b) diagonal line going down
c) horizontal line
d) steeper line going up

Answer 4

a) uniform acceleration
b) deceleration
c) constant speed
d) accelerating faster than (a)

Question 5

How do you calculate the distance travelled on a speed time graph?

Answer 5

Area of the graph (under speed time graph but above axis)

Question 6

Define velocity as speed in a given direction

Answer 6

Velocity is a vector quantity that describes the rate of change of position of an object and includes both magnitude (speed) and direction.

Question 7

What is acceleration and its equation

Answer 7

Change in speed over time taken
a=△v/△t

Question 8

If there is a curved line in a speed time graph what kind of acceleration is it

Answer 8

changing acceleration

Question 9

If there is a straight diagonal line in a speed time graph what kind of acceleration is it

Answer 9

Changing acceleration

Question 10

What is deceleration known as

Answer 10

negative acceleration

Question 11

What is the acceleration due to gravity on Earth

Answer 11

9.8ms-2 or 10ms-2