Tom is moving at 19.1 m/s i-hat relative to Ann. Bob is moving at 17.1 m/s i-hat relative to Ann. Bob is moving at 27.6 m/s i-hat relative to Sue. What is the velocity of Bob relative to Tom?

A laser pointer is placed on a platform that rotates at a rate of 19 revolutions per minute. The beam hits a wall 8 m away, producing a dot of light that moves horizontally along the wall. Let 0 be the angle between the beam and the line through the searchlight perpendicular to the wall. How fast is this dot moving when 0 = Wall π ? 6 8 m Laser (Use decimal notation. Give your answer to one decimal place.) velocity of the dot: m/min

Consider the case of two kids, Sam and Peter, riding a train and playing catch in an empty car. The train is moving to the right at 10 m/s. The kids can throw the ball at a speed of 5 m/s. The side of the car is transparent and a poodle named Max can see the boys playing inside.   What is the speed and direction of Sam’s throw to Peter, according to Max? Explain.

Two speedboats are traveling at the same speed relative to the water in opposite directions in a moving river. An observer on the riverbank sees the boats moving at 4.0 m/s and 5.0 m/s. (a) What is the speed of the boats relative to the river? (b) How fast is the river moving relative to the shore?

If ů = (7,–6, 0) and i = (1, 1,0), find the length and direction of ủ x i and i x ū. Length of u x i is ... ... Direction of u xở is (If u X v does not have a direction, enter "none".) Length of i x ủ is Direction of ú xũ is (If i xủ does not have a direction, enter "none".)

A boat is docked on the southern shore of a swiftly moving river that is 262.0 m wide. The river flows from east to west with a speed of 4.00 m/s relative to the shore. There is a dock located upstream on the northern side of the river at an angle of 57.0∘57.0∘ relative to the shore (i.e. north of east). The boat is able to travel at a speed of 6.50 m/s relative to the water. If the boat travels directly to the dock on the northern shore at a constant speed, how long does it take to get there?

Peggy, standing on a moving railroad car, passes Ryan at velocity ν. Peggy and Ryan both measure the length of the car, from one end to theother. The length Peggy measures is _______ the length Ryan measures.A. Longer than        B. The same as        C. Shorter than

1. Taking north as positive and south as negative for all reference frames, suppose Mayor Adams is riding a southbound train to New York City traveling at 40 m/s relative to the ground, while Governor Hochul is riding a northbound train to Albany at 33 m/s relative to the ground. A) What is the velocity of Mayor Adams in Governor Hochul's reference frame (i.e. in the reference frame where Governor Hochul isn't moving)? B) What is the velocity of Governor Hochul in Mayor Adams reference frame? C) To his surprise Mayor Adams observes a groundhog running along the aisle towards the back of the train with a speed of 2 m/s relative to the train. What is the velocity of the groundhog in Governor Hochul's reference frame? D) What is the groundhog's velocity in the reference frame of someone standing at the train station? E) What is its velocity in Mayor Adams's reference frame? F) What is its velocity in the groundhog's frame? 30 10 ft. 5 ft. 15 ft.

A rocket is moving to the right at 1/2 the speed of light relative to the earth. A light bulb in the center of a room inside the rocket suddenly turns on. Call the light hitting the front end of the room event A and the light hitting the back of the room event B (Fig). Which event occurs first, A or B, or are they simultaneous, as viewed by (a) an astronaut riding in the rocket and (b) a person at rest on the earth? B A 1/2

As the drawing shows, a carpenter on a space station has constructed a 30.0° ramp. A rocket moves past the space station with a relative speed of 0.863c in a direction parallel to side x. What does a person aboard the rocket measure for the angle of the ramp? Number i 30.0° X Units