97.38: A vehicle traveling at a constant 0-dejl0dti* . 9vn6a dk/j .vnd.60 c passes a clock at a street intersection. For a one-second interval on thad nt /v dn ilv6*djkje0..a9d-t clock, what interval will the driver of the vehicle measure?

  07.48: How fast must an observer move 3lh 4yks)/rq 4tg xu(fzj1+p iso that a stationary object appears to be one-half of i)xsrgulfj+ kh t 13/( zyi44qpts proper length?

  11.50: A person sets a one-meter long stick so that it maked jbff)n3 (-gjs a $30^{\circ}$ angle with the x-axis. An observer in a space ship moving along the x-axis measures the angle of the stick to be $60^{\circ}$ with the 6-axis. With what speed is the space ship moving in terms of the speed of light c?

  14.50: Two clocks, A and B, are synchronized f*szsx,z;qa,t ey9q / on Earth. Clock A is placed onto a space ship that leaves Earth in a straight line with a speed zxz s;q,e*s9at , f/qyof $2.40\times\: 10^8$ m/s. On Earth, a scientist with clock B has her telescope fixed directly on clock A. If each clock started at t = 0 s, what time does the scientist observe on clock A when clock B reads t = 90 s ? Assume the time of acceleration for the ship leaving the Earth was negligible.

  16.49: John is at rest on a platform that he measures to be 500 m lo:sn( rlv3vi1rng on the x-axis. He tir (v31:lnr vshen sees a spaceship moving along the x-axis with a speed of $1.80\times\: 10^8\:m/s$ as it crosses the length of the platform. Sitting in her chair, the spaceship's pilot measures the time it takes her to cross the platform. What type of time interval does she measure and what value does she obtain?