# Shared Flashcard Set

## Details

First Semester STudy Guide
The study guide on line
26
Physics
Not Applicable
01/12/2010

Term
 A ball is kicked  straight up at 30 m/sec.  It reaches its highest point in???
Definition
 3.0 seconds
Term
 A ball is tossed up, and falls down.   Howdo you calculate the entire trip, up and down?
Definition
 2 times the time up
Term
 A ball is kicked upwards with a velocity of 40 m/sec.  What is the final velocity  when it hits the ground?
Definition
 -40m/s
Term
 What are the units for acceleration?
Definition
 m/sec/sec
Term
 A car moves starts at marker 8 and moves forward 6 meters in 6 seconds, then back 4 meters in 2 seconds. What is the total displacement ? What is the total distance traveled What is the average velocity of the car between 0 and 10 seconds? What is the speed of the car between 0 and 6 seconds?
Definition
 Displacement = end -start which is -2mTotal distance is start to finish 10mAverage velocity is -.2m/sSpeed: you figure that one out.....
Term
 Describe the displacement, acceleration for this a car if it had an initial speed of 25m/s, applied its brakes, and stopped in 5 seconds.
Definition
 Acceleration = 5m/s/sDisplacement = 25 m
Term
 Rocket launch from the ground. Launch = 25 m/s How long to reach max height? total time in air? Max height? Velocity upon impact with ground? Displacement?
Definition
 how long? 2.5 sTotal time? 5 seMax height? 31.25Velocity? (-10m/s * 2.5)Displacement? you figure that one out.
Term
 A rocket is fired into the air, and returns.  What does the position v time graph look like?
Definition
 an upside down U
Term
 car drives off cliff. What do you need to know to calculate when it hits the ground and how far from the base it lands
Definition
 speed and height of cliff
Term
 What is the vertical velocity of a car driving 35 m/s off an 80 m cliff?
Definition
 -40m/s
Term
 Describe the force pairs of a ball sitting on book sitting on a desk.
Definition
 Book on Ball and Ball on Book
Term
 Why are airbags safer than hitting the windshield?
Definition
 The Airbag increases the stopping time, decreasing the force on the driver.
Term
 An 8 kg cannon ball is fired from an 800 kg cannon Which has the larger change in velocity, the ball or the cannon?  Why?
Definition
 The ball: smaller mass needs larger change in velocity?
Term
 [image] When the cannon fires the cannon ball, which exerts more force?
Definition
 The forces are equal upon impact
Term
 If you weigh 76 kg, how many Newtons do you weigh?
Definition
 760N.
Term
Definition
 C
Term
 200 kg ice boat two boaters, one to the south with 500 N one to the west with 1200 N.   What is the combined force?
Definition
 1300 N
Term
 200 kg ice boat two boaters, one to the south with 500 N one to the west with 1200 N. What is the resulting acceleration?
Definition
 6.5 M/S/S
Term
 A 1000 kg VW  traveling at 8 m/s, collides with a 2500 kg traveling at 4 m/s.  Which has the greater force?
Definition
 Neither, according to Newton's 3rd law, the forces are equal.
Term
 ΔWhen an 8 kg cannon ball is fired from an 800 kg cannon, what do you need to know to calculate the speed of the ball?
Definition
 How much force the cannon applies to the ball and for how long.
Term
 What are these formulas? ΔΡ=mΔv ΔP=FΔt
Definition
 momentum equals mass time change in velocity or momentum equal force times time
Term
 Convert 76 kg to Newtons.
Definition
 760 N
Term
 A student with a mass gets on an elevator.  The elevator moves so that the arbitrary scale the student stands on reads 1260.  What is the unbalance force on the student? What is the acceleration?
Definition
 Funball=500N A=6.6m/s
Term
 What is acceleration due to gravity?
Definition
 -10m/s/s
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