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Unformatted text preview: velocity does not affect the time it takes the ball to descend from the ground. 18) If he wants to kick the ball so that it stays in the air for as long as possible he should kick it upward at a 45-degree angle. 24) When you kick a soccer ball the force is equal. Both you foot and the ball exert equal amounts of force on each other. 31) A person does more work lifting a grain of rice over its head opposed to an aunt, this is because the distance it greater when a human lifts the rice. 38) When your roller-skating on level pavement you can maintain speed but when you go up a hill your speed decreases because gravity is pulling you down, and the friction is less. 1) Mass- 800kg Acceleration- 4m/s2 Force-x Acceleration=net force/mass 4m/s2=x/800kg x=3200kg/s2= force 6) D=.5m Initial velocity=x 16) Work=force x distance X=...
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This note was uploaded on 02/22/2012 for the course CRJS 100 taught by Professor Stew during the Fall '11 term at Maryland.
- Fall '11