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Unformatted text preview: Click to edit Master subtitle style 8/31/11 Physical Science Final review Click to edit Master subtitle style 8/31/11 Acceleration of gravity is 9.8 m/sec. this means an object in free fall would? Gain 9.8 m.sec of downward speed for each second of downward motion 8/31/11 If a Ferrari is driving on the turnpike and takes 15 minutes to go from mile marker 120 to 140 then… Its average speed is 80 mph 1.34 miles per minutes times 60 minutes equals about 80 miles per hour 8/31/11 How far does a 2 kg block fall in 3.2 seconds of free fall if you drop it from the top of a building? 50.2 meters Do the drop distance formula of change in position= ½ gt^2 8/31/11 How far does a 2 kg block fall on the moon in 3.2 seconds? The gravity on the moon is 1.62 m/sec/sec. 8.3 meters Do drop distance formula but substitute the 9.8 for 1.62 for gravity on moon 8/31/11 The acceleration of gravity on the surface of the moon is 1.63 m/sec/sec. How large is the weight force on a .8 kg object? 1.296 N Gravity= 1.62 Mass= .8 kg Do the W=mg equation and plug in numbers 8/31/11 The moon exerts 1500 N of downward pull on a lunar space ship. Due to Newton's 3rd law it must be true that Your Lunar space ship exerts 1500 N of upward pull on the moon 8/31/11 On a circular orbit around the moon a spacecrafts velocity vector Is tangent to the circular orbit 8/31/11 On a spacecrafts circular orbit around the moon it experiences an acceleration which has this direction Toward moons center of mass 8/31/11 A bug with a mass of .0002 kg is clinging to your bike while traveling at a speed of 2 m.sec. The wheels radius is 3 meters. The centripetal acceleration is 13.3 m/sec/sec Do the ac= velocity squared divided by radius 8/31/11 In projectile motion the velocity can be perpendicular to the acceleration only at what point The apogee 8/31/11 In uniform circular motion the velocity can be perpendicular to the acceleration At any point on the circle 8/31/11 Positive work is when Velocity and net force are parallel 8/31/11 Changes in direction and not KE are when Velocity and net force are perpendicular 8/31/11...
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 Spring '08
 VELISSARIS
 Force, Mass, Velocity, Fundamental physics concepts, kg block fall

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