Aprojectile is fired from ground level at time t = 0, at an angle \theta with respect to the horizontal. it has an initial speed v_{0}. in this problem, we are assuming that the ground is level.

part a. find the time t_{h} it takes the projectile to reach its maximum height. express t_{h} in terms of v_{0}, \theta, and g (the magnitude of the acceleration due to gravity).

part b. find t_{r}, the time at which the projectile hits the ground. express the time in terms of v_{0}, \theta, and g.

part c. find h, the maximum height attained by the projectile. express the maximum height in terms of v_{0}, \theta, and g.

part d. find the total distance r (often called the range) traveled in the x-direction; in other words, find where the projectile lands. express the range in terms of v_{o}, \theta, and g.

Aplane flies a distance d from west to east at a constant speed vp , with respect to the air in a time twe . on the return trip, the plane flies a distance d from east to west at a constant speed vp , with respect to the air in a time tew . on both trips the wind blows from west to east at a constant speed va , with respect to the ground 1) what is tew in terms of vp, va, and d, as needed? tew=dvp tew=dvp+va tew=dva tew=dvpâ’va tew=12dvp tew=12dvp+va tew=12dvpâ’va your submissions: b submitted: saturday, january 26 at 6: 49 pm feedback: feedback will be given once all questions have been attempted and the grade cluster button has been pressed. 2) what is twe in terms of vp, va, and d, as needed? twe=dvp twe=dvp+va twe=dva twe=dvpâ’va twe=12dvp twe=12dvp+va twe=12dvpâ’va your submissions: d submitted: saturday, january 26 at 6: 49 pm feedback: feedback will be given once all questions have been attempted and the grade cluster button has been pressed. 3) assuming d = 2300 miles, vp = 400 miles/hr, and twe = 4 hours, what is va, the speed of the wind with respect to the ground? va = 100 miles/hr va = 575 miles/hr va = 200 miles/hr va = 175 miles/hr va = 975 miles/hr 4) once again, assuming d = 2300 miles, vp = 400 miles/hr, and twe = 4 hours, what is tew, the time it takes the plane to fly a distance d miles from east to west? tew = 5.75 hours tew = 11.5 hours tew = 7.67 hours tew = 8 hours tew = 10.2 hours

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?