Motion *

Question 1

What is distance?

Answer 1

how far an object moves
does not include an associated direction, so scalar quantity

Question 2

What is speed?

Answer 2

the rate of change of distance - distance travelled per unit of time
has no associated direction, so is scalar quantity

Question 3

How do you calculate the (average) speed?

Answer 3

speed (m/s) = distance travelled (m) / time taken (s)

Question 4

How do you calculate the distance travelled?

Answer 4

distance travelled = (average) speed x time taken

Question 5

What is acceleration?

Answer 5

the rate of change of velocity

(the amount that velocity changes per unit time)

Question 6

How do you calculate acceleration?

Answer 6

acceleration (m/s2)= change in velocity (m/s) / time taken (s)

Question 7

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

Answer 7

Fin area of the shape below the line :

find area of rectangle under straight line
find area of triangle under angled line
add together both areas

Question 8

What is the equation linking velocity, acceleration and distance?

Answer 8

(final velocity)2 - (initial velocity)2 = 2 x acceleration x distance
m/s m/s m/s2 m

Question 9

Is velocity a vector or scalar quantity?

Answer 9

vector - magnitude and direction