A train is moving at a speed of 0.6c along the positive x-direction (don't worry about...
A. A rocket is travelling in space with a speed of 0.6c away from the origin along the negative x-axis. A second rocket passes by the first. The second rocket has speed 0.6c, heading in a direction in the x-y plane at an angle of 40° above the positive x-axis. Find the magnitude and direction of the velocity of the second rocket as measured in the rest frame of the first rocket.
3. A train boxcar traveling in the positive x-direction with a velocity, u 10.00 m/s R, passes directly in front of an observer on a stationary platform. At the precise moment the boxcar passes the observer, a particle is launched from the bottom, left corner of the boxcar with an initial speed, vo' 8.00 m/s at an angle of 0 30.0° above the horitonatal according to an observer on the boxcar (shown below left). Immediately following the launch, the boxcar...
A 0.25 kg ball moving at a speed of 3 m/s, along the positive x-axis, strikes a stationary horizontal ball of mass 0.30 kg. (a) If the collision is perfectly inelastic, what is the velocity and direction of the balls? (b) If the second ball moves at a rate of 1 m/s towards the positive x-axis, what is the velocity and direction of the first 2. ball after collision?
A 2-kg block moving in the positive x direction with a speed of 5.0 m/s collides with a 3-kg block moving in the same direction with a speed of 2.0 m/s. After the collision the 3-kg block moves at 4.2 m/s. Find the velocity of the 2-kg block after the collision. Is the collision elastic or inelastic? Justify your answer.
At time t_1 an electron is sent along the positive direction of an x axis, through both an electric field E and a magnetic field B, with E directed parallel to the y axis. The figure gives the y component F_net, y of the net force on the electron due to the two fields, as a function of the electron's speed v at time t_1. The scale of the velocity axis is set by v_s = 95 m/s. The x...
question 4-7 4. Travelling Waves and Their Characteristics A rope wave travels in the positive x -direction. You are also told that the speed of the wave is 1000 cm/s, its frequency is 200 Hz, and that the wave is subject to the following initial conditions: at x 0 and t = 0: y =-1 cm, and, at x = 0 and t : ar = +20 cm/s (this is the velocity of the point on the rope at horizontal...