Problem Solver Fundamental of Physics Halliday and Resnick Chapter 4 Number 41

 

Solver Problem Chapter 4 Number 41

Upon spotting an insect on a twig overhanging water, an archer fish squirts water drops at the insect to knock it into the water (Fig. 4-38). Although the fish sees the insect along a straight-line path at angle  and distance d, a drop must be launched at a different angle  if its parabolic path is to intersect the insect. If  =36.0° and d = 0.900 m, what launch angle is required for the drop to be at the top of the parabolic path when it reaches the insect?

Problem Solver Fundamental of Physics Halliday and Resnick Chapter 4 Number 28

 

olver Problem Chapter 4 Number 28

In Fig. 4.14, a stone is projected at a cliff of height h with an initial speed of 42.0 m/s directed at angle θ0 = 60.0° above the horizontal. The stone strikes at A, 5.50 s after launching. Find (a) the height h of the cliff, (b) the speed of the stone just before impact at A, and (c) the maximum height H reached above the ground.

 

Problem Solver Fundamental of Physics Halliday and Resnick Chapter 4 Number 20

 

Solve problem Fundamentals of physics Halliday dan Resnick

Chapter 4

Number 20.

In Fig. 4.12, particle A moves along the line y = 30 m with a constant velocity v of magnitude 3.0 m/s and parallel to the x axis. At the instant particle A passes the y axis, particle B leaves the origin with a zero initial speed and a constant acceleration a of magnitude 0.40 m/s2. What angle θ between → a and the positive direction of the y axis would result in a collision?

Solve:

Key concept is