Motion

Question 1

define displacement

Answer 1

the distance moved from a fixed position in a stated direction an

Question 2

define speed

Answer 2

the rate of change of distance

Question 3

define velocity

Answer 3

the rate of change of displacement

Question 4

define acceleration

Answer 4

the rate of change of velocity

Question 5

average speed =

Answer 5

Total distance traveIed /Total time taken.

Question 6

velocity =

Answer 6

v =Δs/Δt
v – velocity/ms–1
Δs – change in displacement/m
Δt – change in time/s

Question 7

When a body moves with a constant velocity u ms-t, the displacement at any time t is
given by

Answer 7

x=ut

Question 8

1st equation of motion
derived from acceleration formulae

Answer 8

v=u+at

Question 9

acceleration for motion

Answer 9

a=v-u/t

Question 10

s=

Answer 10

ut+1/2at²
vt+1/2at²
(u+v)/2 t

Question 11

v²=

Answer 11

u²+2as

Question 12

When an object is thrown vertically
upwards and air resistance is ignored,
the acceleration is equal to

Answer 12

-g which -9.81

Question 13

if a ball is thrown up when does it reach its mamxium height

Answer 13

when v =0

Question 14

The slope of a displacement–time
graph measures

Answer 14

velocity

Question 15

The slope of a velocity–time
graph measures

Answer 15

acceleration

Question 16

The area under a velocity–time
graph measures

Answer 16

displacement

Question 17

during projectile motion the the force gravity only acts on which component

Answer 17

the vertical component

Question 18

during projectile motion if air resistance is acknowledged what component does it affect

Answer 18

the horizontal component