mechanics xo

Question 1

without s

Answer 1

v = u + at

Question 2

without t

Answer 2

v^2 = u^2 + 2as

Question 3

without v

Answer 3

s = ut + 1/2at^2

Question 4

without u

Answer 4

s = vt -1/2at^2

Question 5

without a

Answer 5

s =1/2 (u+v)t

Question 6

force definition

Answer 6

• when unopposed
• will change the motion of an object
• cause an object with mass to change its velocity
• magnitude and direction (vector quantity)
• measured in newtons

Question 7

displacement

Answer 7

• shortest distance between two points

- vector quantity

Question 8

tension

Answer 8

• force that prevents two objects moving away from eachover

- found in strings + rods

Question 9

thrust

Answer 9

• prevents two objects coming together
• can’t be found in a string or rope, only in rod
• legs of the chair = thrust force, preventing the seat of the chair from falling to the floor

Question 10

newtons first law of motion

Answer 10

-any object at rest, will stay at rest
-any object with constant velocity will stay at constant velocity
UNLESS acted on by a resultant force
-equivalently, if the resultant force is zero, the velocity is constant, and the acceleration is zero