Plane A in Figure Q1 is flying along a straight-line path at velocity of 140 m/s, whereas plane B is flying at 110 m/s along a circular path having a radius of 1 km and slowing down at a rate of 40 m/s². If plane A is accelerating at 15 m/s², determine at that instant shown: a) velocity of plane B relative to plane A acceleration of plane B relative to plane A b) B Figure Q1 1 km

A motorcycle begins at rest at t0 = 0 seconds. The motorcycle starts moving, and eventually covers a distance d = 840 m, in a time tf = 189 s. In a coordinate system with north being the positive x-direction, the motorcycle's motion is in the northern direction (see figure). 1. What was the motorcycle's average velocity in in the northern direction vavg,N, in this period in meters per second?  2.  If the motorcycle's final velocity at tf was 12 m/s, what was the motorcycle's average acceleration in the northern direction, aavg,N, during this period in m/s2?

3. You throw a ball straight from a roof top 160 ft high with an initial speed of 48 ft/s. The formula h = -16t2 + 48t + 160 describes the ball"s height above the ground, h in ft, t in seconds after you throw it. a)When will the ball be 192 ft high? b)When will the ball hit the ground? un in the

Two boats leave the pier P at the same time and travel in the directions shown in (Figure 1). A = 42 ft/s and VB = 30 ft/s. gure 30P 4.5 "/", "=30ft/k 1 of 1 > Part A Determine the magnitude of the velocity of boat A relative to boat B. Express your answer to three significant figures and include the appropriate units. VA/B Submit Part B t = Submit ī Provide Feedback μA Value Request Answer How long after leaving the pier will the boats be 1600 ft apart? Express your answer in minutes to three significant figures. |Π|ΑΣΦ11 vec 4 → → ⒸIE ? Request Answer Units ? min