Work energy and momentum

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  • Created by: Aiste
  • Created on: 15-01-13 18:34
V G X I M G U W U C I N K Y T I E F A
F I R V I L I R O R P X Y W S B G B R
K K D L D X C G V E R T I C A L L Y Y
A N T V N O D N O R U R Y O Y A D C Q
W O B E I P P O M L O O R F X N P P D
O I O L M P U I I P V V M D A O U J W
I T F O U O L T W R K S E T F I E X K
T A C C T S F A W D G R V H X T V A F
J V L I N I K R H F R N A M M A I X L
W R J T E T L U I E M D D M T T T J N
K E Y Y M E W D F L R N G E V I A A O
K S K X O L E S T G I V B N A V S Q L
T N L G M I N C R E A S I N G A O F P
B O M A B A S F E W A A I U T R P L O
W C K V R I P B G I W X A F A G V A D
X M B T W P A A H U D I N I N U S R Y
K V K P I W M H R N T R T A B F H S F
U O J Y O G H B A L L H L Q U F M Q L
S X F V N F T F V T P I M Q N A Q W B

Clues

  • ____is conserved whenever objects interact provided no external forces act on them. (8)
  • all moving objects have momentum. the greater the mass and the greater the ____of an object, the greater the momentum. (8)
  • crumple zones in cars reduce the forces acting by ____the time taken to change the momentum of the car. (10)
  • Energy ___= work done (11)
  • Ep = m x g x h what does Ep stand for? (Change in ___ potential energy) (13)
  • in calculations, one direction must be defined as ___ so momentum in the opposite direction is negative. (8)
  • we can use the ____ of momentum to find the speed of a car before and impact. (12)
  • when two vehicles collide: they exert equal and ____ forces on each other. (8)
  • when vehicles collide, the force of the impact depends on mass, change of velocity and the ____ of the impact. (8)
  • whenever and object is moved ___ upwards it gains gravitational potential energy equal to the work done on it by the lifting force. (10)

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