Two rockets approach each other. Each is traveling at 0.61c in the earth's reference frame. Part A What is the speed, as a fraction of c, of one rocket relative to the other? ΜΕ ΑΣΦ ? 3 20 F3 % 85 54 $ E R Submit Request Answer Provide Feedback FR t 96 FB & 7 8 9 Y U D F G H J K M 0

▾ Part A A starship voyages to a distant planet 10 ly away. The explorers stay 4.0 yr, return at the same speed, and arrive back on earth 26 yr after they left. Assume that the time needed to accelerate and decelerate is negligible. What is the speed of the starship? Express your answer using two significant figures. ΜΕ ΑΣΦ 20 Submit Request Answer Part B ? How much time has elapsed on the astronauts' chronometers? Express your answer using two significant figures. ΕΠΙ ΑΣΦ VAΣ ? t = Submit Request Answer years

Two electrons are brought close together, to a distance of 83 pm apart. They are then both released from rest, accelerating and travelling away from one another. When the two particles are very far apart, how fast will they be going, in m/s? You Ancu

the free-falling experiment is done on the moon stone dropped from height h=1m. after 1.1sec it hits the ground what is the gravity acceleration of the moon O a. 1.82m/s2 O b. 1.65m/s2 O c. 0.91 m/s2 O d. 3.3m/s2 O e. 2m/s2

R3M.8 The new earth-Pluto shuttle shuttle line boasts that it can take you between the two planets (which are about 5.0 hours of distance apart) in 2.5 hours (according to a rider’s watch). Assume that acceleration and deceleration periods are very brief so that you spend essentially all the trip traveling at a constant velocity. a) What time interval must synchronized clocks in the solar system’s reference frame register between the shuttle’s departure from earth and its arrival at Pluto if the advertisement is true? b) What is the shuttle’s cruising speed?

The distnace from earth to the moon is 239,000 miles. a. how many kilometers are in 239000 miles? b. given that the light travels at 3.00*10^8 m/s , how many minutes does it take for light to travel to the moon ? c. The apollo 10 mission holds the record for the highest speed by a manned vehicle at 11080 m/s . How many minutes would it take for the apollo 10 mission to reach the moon assuming the rocket travels ina straight line at that top speed? d. The apollo 11 mission took 73.45 hours to reach lunar orbit once it left earths orbit. The avergae speed duirng that time was 5500km/hr. How many miles did the apollo 11 mission actually travel in space ?

A jet plane travelling with speed 268 km/hr. It's speed in m/s is O a. 74.44 O b. 4466.65 C. 7,44 O d. 744.42 Finish attem 4PPT for Chapter 2 Jump to... (copy)

1. Which pair of events oc- cur at the same time in the rocket frame (primed coordinates)? All axes are in meters. A. G and X В. Х аnd P C. W and U W. D. U and P P x' 2. Lolo X and lolo Y were born on the same year on planet LOL (event O). On their 60th birthday, lolo X discovered a star explosion that is 70 light years away from LOL (event X). Similarly, on their 70th birthday, lolo Y discovered a different star explosion that is 80 light years away from LOL (event Y). Lolo X calculates the proper distance between events O and X while lolo Y calculates the proper distance between events O and Y. Which lolo will obtain the largest proper distance? A. Lolo X В. Lolo Y C. They will calculate the same proper distance D. Proper distance cannot be obtained for these pair of events. 3. Which of the following events can t(m) cause event G? А. X R В. R C. S IS D. N x (m)

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