A ball is projected with speed 40 ms¹ from a point P on a cliff above horizontal ground. The point O on the ground is vertically below P and OP is 36 m. The ball is projected at an angle to the horizontal. The point Q is the highest point of the path of the ball and is 12 m above the level of P. The ball moves freely under gravity and hits the ground at the point R, as shown in Figure 3. Find (a) the value of 0. (b) the distance OR. (c) the speed of the ball as it hits the ground at R.

College Physics
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Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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4.
36 m
40 m s
0
(b) the distance OR.
12 m
Figure 3
A ball is projected with speed 40 ms¹ from a point P on a cliff above horizontal ground.
The point O on the ground is vertically below P and OP is 36 m. The ball is projected at
an angle to the horizontal. The point Q is the highest point of the path of the ball and is
12 m above the level of P. The ball moves freely under gravity and hits the ground at the
point R, as shown in Figure 3. Find
(a) the value of 0.
R
(c) the speed of the ball as it hits the ground at R.
Transcribed Image Text:4. 36 m 40 m s 0 (b) the distance OR. 12 m Figure 3 A ball is projected with speed 40 ms¹ from a point P on a cliff above horizontal ground. The point O on the ground is vertically below P and OP is 36 m. The ball is projected at an angle to the horizontal. The point Q is the highest point of the path of the ball and is 12 m above the level of P. The ball moves freely under gravity and hits the ground at the point R, as shown in Figure 3. Find (a) the value of 0. R (c) the speed of the ball as it hits the ground at R.
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