Mechanics

Question 1

how do you calculate average velocity?

Answer 1

displacement from starting point / time taken

Question 2

how do you calculate average speed?

Answer 2

total distance / time taken

Question 3

what is acceleration?

Answer 3

rate of change of velocity

Question 4

what does the gradient of a velocity time graph represent?

Answer 4

acceleration

Question 5

what does the area under a velocity time graph represent?

Answer 5

distance

Question 6

suvat equation 1

Answer 6

v = u + at

Question 7

suvat equation 2

Answer 7

s = (u + v) * t
/2

Question 8

suvat equation 3

Answer 8

v^2 = u^2 + 2as

Question 9

suvat equation 4

Answer 9

s = ut + 1/2 at

Question 10

suvat equation 5

Answer 10

s = vt - 1/2 at^2

Question 11

What is newton’s first law of motion?

Answer 11

an object will stay at rest and an object moving at constant velocity will do so until an unbalancec force acts on it

Question 12

What is newton’s second law?

Answer 12

f = ma

Question 13

What is newton’s third law?

Answer 13

for every action there is an equal and opposite reaction