# Shared Flashcard Set

## Details

Velocity–time graphs
Revision
8
Physics
12/20/2018

Term
 How do you find the distance or displacement from a velocity/time graph?
Definition
 Find the area under the graph.   Remember: s = area under graph
Term
 How do you find the acceleration from a velocity time graph?
Definition
 Find the gradient of the graph.    Remember: a = v-u                       t
Term
 [image]  Describe the motion from : 1. A-B 2. B-C 3. C-D 4. D-E 5. E-F 6. F-G
Definition
 [image] 1. A-B... constant acceleration 2. B-C... constant speed 3. C-D... constant negative acceleration/deceleration 4. D-E... The car has stopped 5. E-F... constant acceleration in the opposite direction 6. F-G... constant speed in the opposite direction
Term
 [image]   Find the acceleration for motion A
Definition
 [image]    acceleration = gradient of graph a = v-u      t = 20-0    10 = 2 m.s-2   Remember u = 0 (starting speed) and v =20 (final speed)
Term
 [image]    Find the acceleration for point C of the journey
Definition
 [image]    acceleration = gradient of graph a = v-u      t = 0-20    40 = -0.5 m.s-2 (negative acc./deceleration)   Remember u = 20 (starting speed) and v =0 (final speed)
Term

 [image]   Find the distance travelled
Definition

 [image] distance = area under graph     Area for part A = 1/2 x 10 x 20 = 100m     Area for part B =  20 x 20 = 400m     Area for part C = 1/2 x 40 x 20 = 400m   distance travelled = 900m
Term
 [image]
Definition
 [image]
Term
 [image]
Definition
 [image]
Supporting users have an ad free experience!