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Motion in Two Dimensions
Have you tried watering the plants in
your backyard using the hose?
Can you describe the motion of the
water as it leaves the hose?
PROJECTILE MOTION
 is a two-dimensional motion
 It is easier to understand this if the
complete motion is split into two.
 The first goes horizontally and the
second moves vertically.
 Ignoring air resistance, the body
accelerates vertically downwards and
moves horizontally with uniform velocity.
PROJECTILE MOTION
PROJECTILE MOTION
 The horizontal motion of a projectile is
independent of its vertical motion.
UNIFORM VELOCITY
 The horizontal motion of a projectile is
independent of its vertical motion.
A projectile is an object or
body thrown with an initial
velocity and whose motion
is influenced by the pull of
gravity
Trajectory is the curved
path of a projectile.
Projectiles travel with a
parabolic trajectory due to
the influence of gravity
2 types of Projectile Motion
 Body launched horizontally
 Body launched at a certain angle
Describe the motion of a cannonball that is
launched on a very high cliff.
• Launching a Cannon ball
Figure 2 Horizontal and Vertical Velocity of
a Projectile physicsclassroom.com
Vertical velocity increases each
second with the pull of gravity in
free fall.
Each second the ball goes 10 m/s
faster than the previous second
and a greater distance.
5 m 10 m/s 1 s
20 m 20 m/s 2 s
45 m 30 m/s 3 s
80 m 40 m/s 4 s
Which Coin Hits the Floor First?
Place a coin at the edge of a smooth table so that
it hangs over slightly. Then place a second coin
on the tabletop some distance from the
overhanging coin. Slide the second coin so that it
strikes the overhanging coin and both coins fall to
the floor below. What did you observe. Do you
think the speed of the sliding coin affect its
motion?
Which Coin Hits the Floor First?
Projectile thrown horizontally
Give examples of projectile
motion in sports.
ASSESSMENT .Write True if the statement is
correct and False if it is incorrect.
_____1. A projectile motion has a constant
velocity in the horizontal direction.
_____2. The path followed by a projectile is
known as hyperbola.
_____ 3. The path of the projectile motion is
called a trajectory.
ASSESSMENT .Write True if the statement is
correct and False if it is incorrect.
____ 4. A force acting on a projectile is
gravity.
____ 5. As a projectile travel through air, its
vertical velocity remains the same.
____6. Horizontal velocity changes as a
projectile rises and falls.
_____7. Gravity affects both the horizontal
and vertical component of velocity.
ASSESSMENT .Write True if the statement is
correct and False if it is incorrect.
______8. A cannon ball rolling down a slope
is an example of projectile.
______9. Vertical velocity changes as a
projectile rises and falls.
______10. Horizontal velocity has a great
effect on the vertical velocity of a projectile.

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projectile motion, impulse and moment

  • 1.
  • 2.
  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8.
  • 9.
  • 10.
  • 11.
  • 12. Motion in Two Dimensions
  • 13. Have you tried watering the plants in your backyard using the hose?
  • 14. Can you describe the motion of the water as it leaves the hose?
  • 15. PROJECTILE MOTION  is a two-dimensional motion  It is easier to understand this if the complete motion is split into two.  The first goes horizontally and the second moves vertically.  Ignoring air resistance, the body accelerates vertically downwards and moves horizontally with uniform velocity.
  • 17. PROJECTILE MOTION  The horizontal motion of a projectile is independent of its vertical motion. UNIFORM VELOCITY
  • 18.  The horizontal motion of a projectile is independent of its vertical motion.
  • 19. A projectile is an object or body thrown with an initial velocity and whose motion is influenced by the pull of gravity
  • 20. Trajectory is the curved path of a projectile. Projectiles travel with a parabolic trajectory due to the influence of gravity
  • 21.
  • 22. 2 types of Projectile Motion  Body launched horizontally  Body launched at a certain angle
  • 23.
  • 24. Describe the motion of a cannonball that is launched on a very high cliff.
  • 25. • Launching a Cannon ball Figure 2 Horizontal and Vertical Velocity of a Projectile physicsclassroom.com
  • 26. Vertical velocity increases each second with the pull of gravity in free fall. Each second the ball goes 10 m/s faster than the previous second and a greater distance. 5 m 10 m/s 1 s 20 m 20 m/s 2 s 45 m 30 m/s 3 s 80 m 40 m/s 4 s
  • 27. Which Coin Hits the Floor First? Place a coin at the edge of a smooth table so that it hangs over slightly. Then place a second coin on the tabletop some distance from the overhanging coin. Slide the second coin so that it strikes the overhanging coin and both coins fall to the floor below. What did you observe. Do you think the speed of the sliding coin affect its motion?
  • 28. Which Coin Hits the Floor First?
  • 30.
  • 31. Give examples of projectile motion in sports.
  • 32.
  • 33. ASSESSMENT .Write True if the statement is correct and False if it is incorrect. _____1. A projectile motion has a constant velocity in the horizontal direction. _____2. The path followed by a projectile is known as hyperbola. _____ 3. The path of the projectile motion is called a trajectory.
  • 34. ASSESSMENT .Write True if the statement is correct and False if it is incorrect. ____ 4. A force acting on a projectile is gravity. ____ 5. As a projectile travel through air, its vertical velocity remains the same. ____6. Horizontal velocity changes as a projectile rises and falls. _____7. Gravity affects both the horizontal and vertical component of velocity.
  • 35. ASSESSMENT .Write True if the statement is correct and False if it is incorrect. ______8. A cannon ball rolling down a slope is an example of projectile. ______9. Vertical velocity changes as a projectile rises and falls. ______10. Horizontal velocity has a great effect on the vertical velocity of a projectile.