On mountainous downhill roads, escape routes are some- times placed to the side of the road for trucks whose brakes might fail. Assuming a constant upward slope of 26°, calcu- late the horizontal and vertical components of the acceleration of a truck that slowed from 110 km/h to rest in 7.0 s. See Fig. 3–48. Escape route Main road downhill FIGURE 3-48 Problem 53.

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A: Given,  The relative velocity of plane with respect to earth, vp = 208 km/h The relative velocity of…

Q: 63. The cliff divers of Acapulco push off horizontally from rock platforms about 35 m above the…

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Q: 2-27. Derive the equation for the range of a projectile fired on level ground, u sin 20 R where R is…

A: The expression for range of the projectile is R=ucosθtR The expression for the time of flight is…

Q: 2-21. A point is to start from rest, accelerate uniformly for 14 in., then move at a constant speed…

A: 1 inch =0.0254 m Therefore 1.5 inches =1.5*0.0254 =0.0384 m 15 inches=0.381 m

Q: Raindrops make an angle 0 with the vertical when viewed through a moving train window (Fig. 3–52).…

A:

Q: If you drop an object from a height of 1.3 m, it will hit the ground in 0.52 s. If you throw a…

A: Given : h = 1.3 m t = 0.52 s vox = 42 m/s

Q: You throw a ball upward with an initial speed of 4.5 m>s. Whenit returns to your hand 0.92 s…

A:

Q: Q3 In Fig. 4-34, a stone is pro- jected at a cliff of height h with an initial speed of 42.0 m/s…

A: Given: yo=0y=hvo=42 m/sθ=60°t=5.5 s   To Find: h, v, and H.

Q: 2-59. If F=5 kN and 0 = 30°, determine the magnitude of the resultant force and its direction,…

A: Given,F = 5 kNθ = 30°

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A:

Q: -3 A golfer must hit an approach shot to the tree. (a) What initial velocity must be imparted to the…

A:

Q: 2-51. Determine the magnitude of the resultant force and its direction, measured counterclockwise…

A: Given: F1=15 kN F2=26 kN F3=36 kN

Q: •34 Two vectors are presented as a = 3.0î + 5.0jand = 2.0i + 4.0j. Find (a) a x 1, (b)a •B, (c) (đ +…

A:

Q: Not 48 60 In Fig. 4-41, a ball is thrown up onto a roof, landing 4.00 s later at height h 20.0 m…

A:

Q: A rock is kicked horizontally at 15 m/s from a hill with a 45° slope (Fig. 3–58). How long does it…

A: The expression for the horizontal distance,

Q: -1 two places at a speed of 40 kmh Calculate the average speed of the car. A car covers the first…

A:

Q: 2-18. If Fg= 3 kN and 0 = 45°, determine the magnitude of the resultant force and its direction…

A: Given data; The force exerted by boat A is FA=2 kN. The angle of force by boat A from x-axis is…

Q: If an apple freely falls (no airdrag) from the branch of a tree and hit the ground in exactly 0.5…

A:

Q: “A ball is thrown from the edge of a high cliff. Regardless of the angle at which it is thrown, due…

A: Air resistance is always opposite to the motion of the ball. When the ball is thrown from the edge…

Q: You throw a ball toward a wall at speed 25.0 m/s and at angleθ = 40.0 degrees above the horizontal.…

A: a. The horizontal and vertical component of velocity can be calculated as follows, The time of…

Q: **28 In Fig. 4-34, a stone is pro- jected at a cliff of height h with an initial speed of 42.0 m/s…

A: a) The height of the cliff is,

Q: Without air resistance, the time for a vertically tossed ball to return to where it was thrown is O…

A: In the absence of air resistance the force acting on a vertically thrown ball is the gravitational…

Q: 90 At what initial speed must the basketball player in Fig. 4-50 throw the ball, at angle 6 = 55°…

A: Horizontal displacement,

Q: **39 In Fig.4-37, a ball is thrown leftward from the left edge of the roof, at height h above the…

A: (a) According to the projectile motion, the position of the ball along the x axis is, Substitute…

Q: 14 A proton initially has = 4.01 - 2.0j + 4.0 s later has = -2.0i- 2.0j + 5.0k (in meters per…

A:

Q: The captain of a small plane starts his journey by proceeding east. The spee km/h. A sudden north…

A: GivenSpeed of the plane with respect to still air in east direction, vP→=160 i^ km/hSpeed of wind in…

Q: Speed is the magnitude of the velocity. When we say speed is constant, we mean that the magnitude of…

A: The rate of change of velocity is called acceleration.

Q: 5 The initial and final velocities of a particle are shown in Fig. 3-25. Find the particle's average…

A:

Q: (I) Huck Finn walks at a speed of 0.70 m/s across his raft (that is, he walks perpendicular to the…

A: Given: Speed of huck = 0.70 m/s Speed of the raft = 1.50 m/s Velocity of the Huck relative to the…

Q: The cliff divers of Acapulco push off horizontally from rock platforms about 35 m above the water,…

A: Vertical height, h= 35 m  horizontal distance, d = 5 m

Q: 3-15  A pen plotter imparts a constant acceleration of 2.5 m/sec2 to the pen assembly, which travels…

A: Frictional force = μ N where μ = coefficient or friction N = normal force

Q: *2-20. If o = 45°, F = 5 kN, and the resultant force is 6 kN directed along the positive y axis,…

A: