Physics question - Constant acceleration and distance travelled

  • #1
physics question -- Constant acceleration and distance travelled

an object is moving with a constant acceleration, if it travels a distance d during the first 2 seconds and an additional D in the next 2 seconds the ratio of D/d is?

a) 1
b) 2
c) 3
d) 4

i don't understand exactly what the question is asking me to do?
 

Answers and Replies

  • #2
berkeman
Mentor
58,397
8,464


an object is moving with a constant acceleration, if it travels a distance d during the first 2 seconds and an additional D in the next 2 seconds the ratio of D/d is?

a) 1
b) 2
c) 3
d) 4

i don't understand exactly what the question is asking me to do?
Welcome to the PF.

What is the equation that relates the distance travelled to the velocity and acceleration of an object? It is one of the basic kinematic equations for problems involving constant acceleration.

Write out that equation, and the answer should be pretty straightforward...
 
  • #3


vf^2-Vi^2=2adeltax is the equation you're talking about? i tried rearranging that for x and have no clue where to go from there
 
  • #4


Welcome to the PF.

What is the equation that relates the distance travelled to the velocity and acceleration of an object? It is one of the basic kinematic equations for problems involving constant acceleration.

Write out that equation, and the answer should be pretty straightforward...
vf^2-Vi^2=2adeltax is the equation you're talking about? i tried rearranging that for x and have no clue where to go from there
 
  • #5
berkeman
Mentor
58,397
8,464


vf^2-Vi^2=2adeltax is the equation you're talking about? i tried rearranging that for x and have no clue where to go from there
No, I'm referring to the equation for x(t) in terms of initial position, initial velocity, acceleration, and time...
 
  • #6
1,065
10


Use area of a triangles and square in a velocity-time diagram.
You can find v1, 2 and acceleration from this constant acceleration diagram.
Since it is a ratio you can start for v0=0.
 

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