Science Starter! 1.Submit “Dollar Bill” activity on teacher desk. 2.Review homework answers with a partner/small group: Page 82, #’s 97-99.

Slides:

Advertisements

Similar presentations

Freefall Motion Notes Any object near the surface of the Earth experiences the pull of gravity. If released from rest, the object will fall freely toward.

Advertisements

One-Dimensional Motion in the Vertical Direction (y – axis) or Freely Falling Bodies Montwood High School Physics R. Casao.

Does the odometer of a car measure distance traveled or displacement? 1.Distance traveled 2.displacement 3.neither 4.both.

Cart project due 9/19 Wed. Check your rubric for expectations and grading procedure!! Contests fastest cart - 5 pts extra credit longest distance – 5 pts.

ACCELLERATION -Acceleration shows how fast velocity changes - Acceleration is the “velocity of velocity”

Jeopardy Vectors 1-D Holdover Concepts Calcu- lations Pictures $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 Final Jeopardy.

Volume 4: Mechanics 1 Vertical Motion under Gravity.

Chapter 3 Free Fall Motion

Today’s Topic Free Fall What is Free Fall? Free Fall is when an object moves downward (vertically) only as the result of gravity.

Physics: Concepts and Connections, 4 th ed., Art Hobson Chapter 3 – Motion.

Physics Quicky A Stone Thrown Downward

Free Fall Chapter 2 Section 3.

Science Starter! Consider a ball thrown directly overhead. 1.Describe what happens to its velocity (in terms of speed and direction) on (a) the way up,

Physics  Free fall with an initial horizontal velocity (assuming we ignore any effects of air resistance)  The curved path that an object follows.

If you drop an object in the absence of air resistance, it accelerates downward at 9.8 m/s 2. If instead you throw it downward, its downward acceleration.

Free falling …. ACCELERATION DUE TO GRAVITY All bodies in free fall (that is no air resistance) near the Earth's surface have the same downward acceleration.

FALLING OBJECTS pp Freely falling bodies undergo constant acceleration. Such motion is referred to as free fall. The free-fall acceleration.

Preview Section 1 Displacement and Velocity Section 2 Acceleration

Physics 218: Mechanics Instructor: Dr. Tatiana Erukhimova Lectures 6,7.

Chapter 2, Part 3 September 7, A ball is thrown downward (not dropped) from the top of a tower. After being released, its downward acceleration.

Projectiles The red ball is given a velocity U at an angle  to the horizontal U  The time taken for the ball to move up and down is the same time as.

Objects Thrown Vertically Upward

Project of EDD-5161R Yue Ying Ho ( ) Wong Bing Sze ( )

Science Starter! Complete the worksheet “Science Starter!” (on teacher’s desk).

Projectile Motion Review.

Projectile Motion. Definition this type of motion involves a combination of uniform and accelerated motion When an object is thrown horizontally from.

Physics - Chapter 3.

A soccer ball is kicked into the air. You may safely assume that the air resistance is negligible. The initial velocity of the ball is 40 ms -1 at an angle.

Projectiles Horizontal Projection Horizontally: Vertically: Vertical acceleration g  9.8 To investigate the motion of a projectile, its horizontal and.

Projectiles A “projectile” is an object which is projected (thrown, dropped, fired) into the air or space. e.g. marble pushed off the edge of a bench.

CHAPTER 3 ACCELERATION Defining Acceleration: -Term -Motion Diagram -Graphic Relationships -Kinematic equations.

PHYS 20 LESSONS Unit 2: 2-D Kinematics Projectiles Lesson 5: 2-D Projectiles.

4.7 Improper Integrals 1 For integration, we have assumed 1. limits of integration are finite, 2. integrand f(x) is bounded. The violation of either of.

Vertical Motion Problems

A Short Review. 1. What are these two forces? A B.

Speed – Time Graphs. SlopeExampleInterpretation high positive value high acceleration rapid increase in speed low positive value low acceleration slow.

Quadratics Review y = x 2. Quadratics Review This graph opens upwards y = x 2.

4.5 Free Fall. Falling Objects Imagine there is no air resistance and that gravity is the only thing affecting a falling object. An object moving under.

I.A.1 – Kinematics: Motion in One Dimension. Average velocity, constant acceleration and the “Big Four”

Learning Target 5 → Free Fall: I can use the acceleration of gravity to describe and calculate an object's motion 5.1 I can describe how and why the rate.

2.3 Physics Falling Objects.

Displacement, Velocity, Constant Acceleration.

Acceleration due to Gravity A special case study of uniform acceleration.

Acceleration Due to Gravity. the acceleration due to gravity (9.81 m/s 2 [↓]) always acts down -when the object is travelling towards the earth -when.

Sec. 2–3: Falling Objects Coach Kelsoe Physics Pages 60–65.

Continued Projectile Motion Practice 11/11/2013. Seed Question Six rocks with different masses are thrown straight upward from the same height at the.

Chapter 2 Section 3 falling Objects. Objectives  Relate the motion of a freely falling body to motion with constant acceleration.  Calculate displacement,

Question 1 ›Please form a group of 2 or 3 ›Collect a whiteboard from the side of the room ›Make sure to have a calculator and equation sheet out on your.

Motion in One DimensionSection 1 Preview Section 1 Falling ObjectsFalling Objects Section 2 Extra QuestionsExtra Questions.

A car starting from rest speeds up to 30 m/s with a constant acceleration over a time of 10 seconds. Then, it travels at 30 m/s for 10 seconds, and finally.

VERTICAL ONE DIMENSIONAL MOTION.  Relate the motion of a freely falling body to motion with constant acceleration.  Calculate displacement, velocity,

Motion in One Dimension

Acceleration, Velocity, and Position Unit 4 Day 3.

Physics Section 3.3 Properties of Projectile Motion

Y-Axis Motion Physics 513.

A ball is rolling along a flat, level desk. The speed of the ball is 0

Describing Motion Free falling ….

November 20, 2017 Free Fall.

© 2015 Pearson Education, Inc.

Warmup If dropped from the same height (discounting air resistance), which will hit the ground first: a bowling ball or a feather? Explain your answer.

Chapter-3 Falling Objects and Projectile Motion

Vertical Motion Problems

Motion in a Straight Line

15 25o Year 10 Revision Assessment date: Name:

Unit 1 Our Dynamic Universe Velocity-Time Graphs

Assessment Questions Which of these expresses a vector quantity? 10 kg

stays there for a second, and then runs back to P

Mike Wilson holds the world record for the highest slam dunk

Presentation transcript:

Science Starter! 1.Submit “Dollar Bill” activity on teacher desk. 2.Review homework answers with a partner/small group: Page 82, #’s 97-99

Think about it… Consider a ball thrown directly overhead. 1.Describe what happens to its velocity (in terms of speed and direction) on (a) the way up, and (b) the way down. 2.Describe what happens to its acceleration on (c) the way up, and (d) the way down.

Vertical Motion 1.Objects thrown downward - Initial velocity is NOT zero - Initial velocity is NEGATIVE (“down”) 2. Objects thrown upward - Initial velocity is NOT zero - Initial velocity is POSITIVE (“up”)

Example 1 A book is thrown downward at 5 m/s from a window on the third floor of a high school, which is 10.0 m above the ground. (a)What is the velocity of the book just before it hits the ground? (b)How much time does the book spend in the air before it hits the ground? (c)If the book was thrown UPWARD at 5 m/s instead, how fast would it be traveling just before it hits the ground?

v o = -5 m/s a g = m/s 2 y o = 10 m y = 0 m (a)v = ? (b)t = ? (c)v o = 5 m/s ; v = ? (a) v 2 = v o 2 + 2a(y – y o ) v 2 = (- 5) 2 + 2(- 9.8)(0 – 10) v 2 = = 221 v = m/s (b) v = v o + at (- 14.9) = (- 5) + (- 9.8)(t) (- 9.9) = (- 9.8)(t) t = 1.01 s

v o = + 5 m/s a g = m/s 2 y o = 10 m y = 0 m (c) v 2 = v o 2 + 2a(y – y o ) v 2 = (+ 5) 2 + 2(- 9.8)(0 – 10) v 2 = = 221 v = m/s

t (s)a (m/s 2 )v (m/s)y (m)

t (s)a (m/s 2 )v (m/s)y (m)

Key Ideas for Vertical Motion On way up: v is (+) a g = m/s 2 Speed decreases At highest point: v = 0 a g = m/s 2 On way down: v is (-) a g = m/s 2 Speed increases If object returns to height from which it was thrown: (y = y 0 ) then: v = (- v 0 )