97.38: A vehicle traveling at a constant 0.60 c passes a clock ay+m1i4 pdk t1ht a street intersection. For a one-seconkhy t+1 14pimdd interval on that clock, what interval will the driver of the vehicle measure?

  07.48: How fast must an observer move so that a stationary object hp.b qsvpe .:bb86,eu appears to be one8ve.hb6 ,ep :sbupqb. -half of its proper length?

  11.50: A person sets a one-meter long stick so that it maki)9z 1qp8 iwn)g /vxties 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 2eb ch/.ga 7mq3 pcg)jsynchronized on Earth. Clock A is placed onto a space ship that leaves Earth in a straight line wj2/.c7eg am3qbcgp ) hith a speed of $2.40\times\: 10^8$ 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 th3a6 xf /2jnuv x pz7h2zozy-.pat he measures to be 500 m long on the x-axis. He then sees a spaceship moving 72 apn/h zoy26-vx 3zuxzp f.jalong 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?