An ice skater slides in a straight line across the ice. as she passes a certain point, her velocity is 24 km/hr. two seconds later it is 13 km/hr. what is the acceleration of the skater? 5.5 km/hr/sec -5.5 km/hr/sec 11 km/hr/sec -11 km/hr/sec

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

What does the law of conservation of mass state?

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