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1. Alice throws the ball to the +X direction with an initial ** velocity** 10m/s. Time elapsed during the motion is 5s, calculate the height that object is thrown and Vy component of the

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released until it strikes
the ground.
4. The time it takes for the ball to hit the
ground depends on v0 , g and h.
004 10.0 points
The ** velocity** of a projectile at launch has a
horizontal component vh and a vertical component vv . When the projectile is at the highest point of its trajectory, identify the vertical
and the horizontal components of its

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how is time, t related to the inclination of the track? Explain why?
Time and position of ** velocity** are interrelated to each other and the height and gravitational pull affects the acceleration of a moving and a free falling object.
3. From the data obtained, how would you account the difference between the picket fence’s acceleration and the value of g?
The value of the slope of a graph of average

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** Velocity**
The word,

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2: SPEED, ** VELOCITY** AND ACCELERATION
2.1 Distance and Displacement
• Distance is the total length covered by a moving object irrespective of the direction of motion, i.e. only the magnitude is of importance.
• Displacement is the distance measured in straight line AND in a specific d__________________. Both magnitude and d_________________ are important.
Example 1
A car travels 5 km due east and makes a U-turn back to travel a further distance of 3 km.
Find (a) the distance covered, (b)...

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consideration of the forces that cause the motion. There are four activities done in this experiment. Graphical analysis of human motion, where displacement vs time and ** velocity** vs. time were graphed. Graphical analysis of motion where in the 10th seconds the total displacement is 18.75m, average

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Exercises for Chapter 1 Kinematics
1. An impulsive retarding force of 3 seconds duration acts on a particle which is moving with a forward ** velocity** of 60 m/s. The oscilloscope record of the deceleration is shown. Determine the approximate

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between the moment the car left the table and the moment it hit the floor?
b. What was the horizontal ** velocity** of the car when it hit the ground?
3. A hawk in level flight above the ground drops the fish it caught. If the hawk’s horizontal speed is , how far ahead of the drop point will the fish land?
4. A pistol is fired horizontally toward a target away, but at the same height. The bullet’s

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Impulsive Force Model Worksheet 2: Quantitative Conservation of Momentum
Name: ______________________________________
1. Kim holds a 2.0 kg air rifle loosely and fires a bullet of mass 1.0 g. The muzzle ** velocity** of the bullet is 150 m/s. Find the recoil speed of the gun.
Momentum conservation equation:
Recoil speed =________________
2. If the girl in the previous question holds the gun tightly against her body, the recoil speed is less. Calculate the new recoil speed for the 48 kg girl...

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30’+60’ = 90’=5400s=1.5h
40km+40km=80km
vavg= 80000m/5400s=13.168724279835390946502057613169 m/s = 48 km/h
2. The coordinate of an object is given as a function of time by x = 7t – 3t2, where x is in meters and t is in seconds. Its average ** velocity** over the interval from t = 0 to t = 2 s is:
A) 5 m/s
B) –5 m/s
C) 11 m/s
D) –11 m/s
E) –14.5 m/s
vt= 7-6t = 7-12=-5 m/s
3. The coordinate of a particle in meters is given by x(t) = 16t – 3.0t3, where the time t is in seconds. The...

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