kinematics

Question 1

Motion under constant acceleration can be described using what?

Answer 1

The constant acceleration equations. There are four of them. Also known as the four kinematic equations.

Question 2

what is “d” in a kinematic equation

Answer 2

displacement

Question 3

what is “vf” in a kinematic equation

Answer 3

final velocity

Question 4

what is “vi” in a kinematic equation

Answer 4

initial velocity

Question 5

what is “a” in a kinematic equation

Answer 5

acceleration

Question 6

what is “t” in a kinematic equation

Answer 6

velocity at time.

Question 7

list the four kinematic equations

Answer 7

vf= vi + at
d= vit + 1/2at
vf^2= vi^2 + 2ad
d= 1/2(vi + vf)t

Question 8

steps to solving a problem using these formulas?

Answer 8

1- write all your data (list).
2- find the not needed variables and find an equation that does not use it.
3- substitute values and solve.

Question 9

what is acceleration?

Answer 9

a change in velocity.

Question 10

when does velocity change?

Answer 10

when there is a change in its magnitude (eg. a change in speed), a change in direction or both.

Question 11

what does acceleration include?

Answer 11

speeding up
slowing down (deceleration)
changing direction (centripetal acceleration)

Question 12

what is centripetal acceleration

Answer 12

changing direction (acceleration)