P5 - Projectile Motion

Question 1

What is a projectile?

Answer 1

• A projectile is something that is projected, or dropped, and from then only has Earth’s gravitational field ( gravity ) acting on it ( ignoring air resistance ).

Question 2

What is trajectory?

Answer 2

• A trajectory is the path a projectile takes through the air, it is always parabolic.

Question 3

What are some examples of projectiles?

Answer 3

• Missiles
• Footballs
• Golf Blals

Question 4

What does the distance of a projectile depend upon, ad what conditions produce the the greatest distance?

Answer 4

• The distance a projectile travels depends on the angle it is launched at.
• If the angle is less than 45°, then the projectile won’t travel as far
• If the angle is greater than 45°, this will mean the projectile will take longer to hit the ground but won’t travel as far.
• A projectile will travel farthest at a 45 degree angle.

Question 5

What are the two parts to motion?

Answer 5

• Horizontal Motion
• Vertical Motion
• Remember, these are two seperate motions, they don’t affect each other.

Question 6

What motion does gravity affect?

Answer 6

• Gravity doesn’t affect horizontal motion.

* Gravity has an affect on vertical motion.

Question 7

What happens when an object is projected horizontally?

Answer 7

• An object projected horizontally accelerates vertically due to gravity
• It has no acceleration horizontally, its velocity remains the same.

Question 8

What happens when an object is projected at an angle?

Answer 8

• An object can be projected at an angle, and the motion can be split into horizontal and vertical parts.

Question 9

What is the resultant velocity of a projectile at any point?

Answer 9

• Both velocities provided are vectors

* The resultant velocity of the ball at any point is the vector sum of the seperate bits.