Physics 4.1.3-4 Motion Along a Straight Line and Projectile Motion

26 flashcards · Physics · by TheoTyson

1. What is speed?

   How fast something is moving.

2. What is displacement?

   How far an object has travelled from its starting point.

3. What is velocity?

   The rate of change of an object's displacement.

4. What is acceleration?

   The rate of change of an object's velocity.

5. What is the gradient of a displacement - time\text{displacement - time}displacement - time graph?

   velocity\text{velocity}velocity

6. What is the gradient of a velocity - time\text{velocity - time}velocity - time graph?

   acceleration\text{acceleration}acceleration

7. What is the instantaneous speed?

   The speed of an object at a given time.

8. What is the average speed?

   The total distance divided by the total time.

9. What is the area under a velocity - time\text{velocity - time}velocity - time graph?

   displacement\text{displacement}displacement

10. What is the are under an acceleration - time\text{acceleration - time}acceleration - time graph?

    velocity\text{velocity}velocity

11. What is the suvat\text{suvat}suvat equation involving a, t, u, v\text{a, t, u, v}a, t, u, v ?

    v = u + at\text{v = u + at}v = u + at

12. What is the suvat\text{suvat}suvat equation involving s, t, u, v\text{s, t, u, v}s, t, u, v ?

    s=(u + v2)t\text{s} = (\frac{\text{u + v}}{\text{2}}) \text{t}s=(2u + v​)t

13. What is the suvat\text{suvat}suvat equation involving a, s, u, v\text{a, s, u, v}a, s, u, v ?

    v2=u2+2as\text{v} ^2 = \text{u} ^2 + \text{2as}v2=u2+2as

14. What is the suvat\text{suvat}suvat equation involving a, s, t, u\text{a, s, t, u}a, s, t, u ?

    s = ut +at22\text{s = ut +} \frac{\text{at}^2}{\text{2}}s = ut +2at2​

15. What is the acceleration of an object in free fall?

    The acceleration due to gravity.

16. How can you find the value of acceleration due to gravity from a displacement - time\text{displacement - time}displacement - time 2^22 graph?

    s = ut +at22\text{s = ut +} \frac{\text{at}^2}{\text{2}}s = ut +2at2​ u = 0\text{u = 0}u = 0 st2=g2\frac{\text{s}}{\text{t}^2} = \frac{\text{g}}{\text{2}}t2s​=2g​

17. How can projectile motion be simplified?

    The horizontal and vertical are independent and can be evaluated separately.

18. How can the time be calculated for projectile motion?

    The vertical velocity, acceleration due to gravity and the height.

19. How can the distance be calculated for projectile motion?

    The horizontal velocity and the time.

20. What is friction?

    A force that opposes motion.

21. What is terminal speed?

    The maximum speed of an object when friction equals the driving force, there is no result force or acceleration.

22. How is terminal speed reached?

    An object accelerates from rest with a constant driving force. As speed increases, the friction increases, the resultant force decreases, and the acceleration decreases. As the speed keeps increasing, the friction increases until it is equal to the driving force,

23. What is drag?

    A frictional force in the opposite direction to motion.

24. What is lift?

    An upwards force pulling an objet up through a liquid or gas.

25. What would be the effect of air resistance on projectile motion?

    The projectile would be slowed down by air resistance.

26. What happens to the friction as speed increases?

    As speed increases, the friction will also increase.