1A.1 velocity and acceleration

Question 1

what is the formula of speed

Answer 1

v ms-1 = d(m)/ t(s)

Question 2

what is velocity

Answer 2

it is the rate of change of displacement

Question 3

what is displacement

Answer 3

distance in a purticuler directio

Question 4

what is a vector

Answer 4

a quantity that has a direction and a magnitude

Question 5

what is a scalar

Answer 5

a quantity that only has a magnitude

Question 6

average speed =

Answer 6

the total distance of the journey/ the time taken for the journey

Question 7

what is acceleration

Answer 7

the rate of change of velocity

Question 8

acceleration =

Answer 8

acceleration (ms-2) = Chnge in velocity (ms-1)/ time taken to change the velocity (s)

Question 9

if an object decelerates what does that mean

Answer 9

it could mean that the direction of the object has changed

Question 10

what deceleration

Answer 10

negative acceleration

Question 11

what is the instantaneous speed

Answer 11

the speed of any particular instant in time of a journey which could be found by the gradient of the tangent to a distance-time graph