Phy 211 General Physics I Chapter 4 Worksheet 1 1 A ball rolls off a flat level table with a horizontal velocity initial of 5 m s The height of the table is 1 0 m Neglect air resistance a Sketch a vector diagram of the ball just as it leaves the table r b Express the ball s velocity vector v t in component form as it falls c How much time does it take for the ball to fall to the ground d Express the velocity vector of the ball just before it strikes the ground e What is the horizontal velocity of the ball just before it hits the ground Why f What is the magnitude of the ball s velocity just before it hits the ground g Sketch a vector diagram of the ball just before it strikes the ground h How far from the table does the ball strike the ground i If the same ball were travelling with an initial horizontal speed of 10 m s when it leaves the table how long does it take for the ball to strike the ground j How far from the table would the ball in f strike the ground Phy 211 General Physics I Chapter 4 Worksheet 2 A bullet is shot from a gun with an initial velocity of 280 m s at angle of 30 o above the horizontal The gun is positioned at ground level when the bullet is fired Neglect the effects of air resistance a Sketch a vector diagram of the bullet just as it leaves the gun b Express the bullet s initial velocity vector in component form c How long does the bullet take to reach the top of its trajectory d How high above the ground does the bullet reach at the top of its trajectory e Sketch a vector diagram of the bullet at the top of its trajectory f Express the bullet s velocity vector of the bullet in component form at the top of its trajectory g What is the total hang time for the bullet h Express the displacement vector for the bullet r t in component form i How far from the gun does the bullet strike the ground 2 Phy 211 General Physics I Chapter 4 Worksheet 3 In the bathroom in a galaxy far far away Joey notices a really large zit residing on his forehead Joey pops the zit and it shoots across the countertop and sticks to the mirror When the zit was popped Joey was standing 0 5 m from the mirror and the pus glob landed 0 3 m below the launch position Assume there is no air resistance acting on the glob a Express the velocity and displacement vectors in component form while the glob is in the air 3 Mirror 0 5 m 0 3 m glob Counter top b How long does the glob fly through the air r c How fast vo was the pus glob traveling as it just leaves the pore d If the same globule had shot from Joey s forehead at an initial angle of 25 o above the horizontal where would it land on the mirror Yuck 4 Consider two identical golf balls struck by different loft golf clubs Ball 1 leaves the ground at an initial angle of 60o above the horizontal and ball 2 has an initial angle of 45 o Both balls have an initial speed of 45 m s Neglect the effects of spin and air resistance on the golf balls a What are the initial velocity vectors for each ball in component form b Which ball has the greater hang time Calculate it for both balls c Which ball travels farther horizontally while in the air Calculate the range for both balls d Using the 60o loft golf club what initial speed and velocity in component form must the golf ball have to travel 70 yards in the air e Explain why a ball hit with the 45o golf club will likely roll further once the ball hits the ground compared to the 60o golf club Phy 211 General Physics I Chapter 4 Worksheet 5 Lateral Acceleration According to Road Track magazine the maximum lateral acceleration of the Corvette Convertible is 0 98 g To measure lateral acceleration the Corvette is driven around a flat 200 ft radius circular track the skidpad at the highest speed possible until the tires lose grip with the road a Draw a simple vector diagram for the car during this road test b What is the maximum lateral acceleration in SI units c What speed would correspond to the acceleration calculated in b d Express the velocity vector for the Corvette when it has traveled 40 o around the track 4
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