Questions from Modern Physics

Q: Canada geese migrate essentially along a north–south direction for well

Canada geese migrate essentially along a north–south direction for well over a thousand kilometers in some cases, traveling at speeds up to about 100 km/h. If one goose is flying at 100 km>h relative...

Q: An airplane pilot wishes to fly due west. A wind of

An airplane pilot wishes to fly due west. A wind of 80.0 km/h (about 50 mi/h) is blowing toward the south. (a) If the airspeed of the plane (its speed in still air) is 320.0 km/h (about 200 mi/h), in...

Q: The position of a squirrel running in a park is given by

The position of a squirrel running in a park is given by

Q: A jet plane is flying at a constant altitude. At time

A jet plane is flying at a constant altitude. At time t1 = 0, it has components of velocity vx = 90 m/s, vy = 110 m/s. At time t2 = 30.0 s, the components are vx = -170 m/s, vy = 40 m/s. (a) Sketch th...

Q: The official’s truck in Fig. 2.2 is at x1

The official’s truck in Fig. 2.2 is at x1 = 277 m at t1 = 16.0 s and is at x2 = 19 m at t2 = 25.0 s. (a) Sketch two different possible x-t graphs for the motion of the truck. (b) Doe...

Q: A dog running in an open field has components of velocity vx

A dog running in an open field has components of velocity vx = 2.6 m>s and vy = -1.8 m/s at t1 = 10.0 s. For the time interval from t1 = 10.0 s to t2 = 20.0 s, the average acceleration of the dog has...

Q: The coordinates of a bird flying in the xy-plane are

The coordinates of a bird flying in the xy-plane are given by x(t)= at and y(t)= 3.0 m - bt2, where a = 2.4 m/s and b = 1.2 m/s2. (a) Sketch the path of the bird between t = 0 and t = 2.0 s. (b) Calcu...

Q: A remote-controlled car is moving in a vacant parking lot

A remote-controlled car is moving in a vacant parking lot. The velocity of the car as a function of time is given by

Q: A physics book slides off a horizontal tabletop with a speed of

A physics book slides off a horizontal tabletop with a speed of 1.10 m/s. It strikes the floor in 0.480 s. Ignore air resistance. Find (a) the height of the tabletop above the floor; (b) the horizonta...

Q: Starting with the definition 1 in. = 2.54 cm

Starting with the definition 1 in. = 2.54 cm, find the number of (a) kilometers in 1.00 mile and (b) feet in 1.00 km.