3. a kicker kicks a foorball from ground level with an initial velocity of 21.7 m/s 45.0⁰ above the horizontal. will the
player able to make a fleldgoal that is 45.0 m away? (the cross bar on a field goal is 3.05 m high). include your process on how to find the answer would appreciate it.

What happens when a rubber rod is rubbed with a piece of fur?

An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2

2) the sun is wonderful source of energy. it is renewable and natural with few dangers. solar cells rely on the sun for energy. these cells would be more practical to use if they were