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xlm) The motions of two Cheetahs, represented by P and Q, are described by the positionetime graphs shown above. Do the two Cheetahs ever have the same velocity? O A. P and Q never have the same velocity, 0 B. P and Q have the same velocity at 1 s and 3 s Q C. P and Q have the same velocity at 3 st 0 D. P and Q have the same velocity at approximately 2 s. Q E. P and 0 have the same velocity at 1 s, 2 s, and 3 5, Preview My Answers Submit Answers \\_/ Rank in order, from most positive to least positive, the accelerations at points A to C on the velocitytime graph above. OA. c>A>B OB. A>B>C Oc. A>C>B U V C+ In a recent television broadcast, an astronaut was shown to be 'weightless' while on a visit to the International Space Station (ISS) which orbits Earth. This can be explained by the fact that O A. the force of gravity exerted on the astronaut by Earth is zero. O B. the force of gravity exerted on the astronaut by Earth is balanced by the force of gravity exerted on the astronaut by the sun. O C. the force of gravity exerted on the astronaut by Earth is balanced by the force of gravity exerted on the astronaut by the ISS. O D. the astronaut and the ISS are both in free fall. O E. the ISS is going so fast that the force of gravity exerted on the astronaut by Earth is negligible.V e A muscle tendon with a circular cross-section of diameter d and length Lo is stretched by an amount AL by a steady force F. How much stretch would an equal force produce in a similar tendon of diameter 2d and length 2Lo? O A. AL/8 O B. AL/4 O c. AL/2 O D. 2AL O E. 4ALA ball travelling horizontally is caught in a wellpadded mitt. Take the direction of the motion of the ball to be the positive direction If the acceleration of the ball is 1.706 l 04 m/sz, and 1.7 ms elapses from the time the ball first touches the mitt until it comes to rest, what was the initial velocity of the ball? Include units as appropriate v0