Projectile Motion Workesheet.docx

Name: __________________________ Grade & Sec: _____________________ Date: ___________________________

3.

Which of the following statement is true? Two objects are released from the same height. Object A falls straight down from the cliff and object B follows a curved parabolic path. A. A hits the ground before B B. B hits the ground before A C. A hits the ground first only if it is heavier than B D. A and B hit the ground at the same time.

4.

Acceleration can be defined as the rate at which an object changes its position. A. True B. False

Projectile Worksheet  Projectile motion refers to the motion of an object that is thrown, or projected into the air at an angle.

5.

 The motion of a projectile is determined only by the object’s initial velocity and gravity.  The path of the projectile is called its trajectory.  Projectile motion is a combination of horizontal motion and vertical motion.  Horizontal Motion - The horizontal motion of a projectile is constant because no gravitational force acts horizontally. -The horizontal acceleration is zero thus, velocity is constant.  Vertical Motion - The vertical motion of a projectile is nothing more than free fall with a constant downward acceleration due to gravity. - The velocity increases as it moves downward.  Angle and Range  Relationship between angles and the height: •As the angle increases, the height also increases.  Relationship between the angle and therange: •If the angle is less than 45 degrees, the range is increasing. if the angle is greater than 45 degrees the range is decreasing.  Relationship between the angle and the time: •As the angle increases, the time also increases.  Maximum range is achieved if the projectile is fired at an angle of 45 degrees with respect to the horizontal

Projectile motion has two component, horizontal(x) and vertical (y) as can be seen in the figure above. The horizontal motion has A. Contant acceleration B. Changing acceleration.

C. constant velocity D. changing velocity

6.

In the absence of air friction, which component of a projectile’s velocity will not change as the projectile moves? A. Vertical C. both vertical and horizontal B. Horizontal. D. none

7.

In the absence of air resistance, the angle at which projectile will go farthest is. . . A. 75o B. 60o C. 45o. E. 30o

8.

Which launch angle will have the same range as 25o? A. 65o B. 55o C. 45o D. none of the these

9.

In projectile motion, the initial horizontal velocity is _______ the final horizontal velocity. A. Smaller than C. the same as B. Greater than. D. zero

10. Which of the following would NOT be considered a projectile? A. A cannonball fired towards a distant castle. B. A cannonball rolling down a sloppe. C. A cannonball fired straight outward from a castle wall. D. A cannonball after it rolls off the edge of a cliff. Check your Understanding: 1. A _____________ is any object moving only under the influence of gravity 2.

The path of a projectile is known as its _________________?

/sdeleon