Mechanics Chapter 9 Constant Acceleration

Question 1

what represents velocity on a displacement-time graph?

Answer 1

the gradient

Question 2

what does it mean if the displacement-time graph is a straight line?

Answer 2

velocity is constant

Question 3

what is the equation for average velocity?

Answer 3

average velocity = displacement from starting point / time taken

Question 4

what is the equation for average speed?

Answer 4

average speed = total distance travelled / time taken

Question 5

what represents acceleration on a velocity-time graph?

Answer 5

the gradient

Question 6

what does it mean if the velocity-time graph is a straight line?

Answer 6

acceleration is constant

Question 7

what represents distance on a velocity-time graph?

Answer 7

the area under the velocity-time graph

Question 8

what are the 5 SUVAT equations?

Answer 8

1. v = u + at
2. s = (u + v)/2 x t
3. s = ut + 1/2at^2
4. v^2 = u^2 + 2as
5. s= vt - 1/2at^2

Question 9

what is the acceleration of an object moving vertically under gravity?

Answer 9

constant acceleration of 9.8 m s^-2