Questions from College Physics

Q: The velocity vector of a sprinting cheetah has x- and y

The velocity vector of a sprinting cheetah has x- and y-components vx = +16.4 m/s and vy = −26.3 m/s. (a) What is the magnitude of the velocity vector? (b) What angle does the velocity vector make w...

Q: Consider the skydiver and parachute to be a single system. Identify

Consider the skydiver and parachute to be a single system. Identify the external forces acting on this system and draw an FBD.

Q: A vector is 20.0 m long and makes an angle

A vector is 20.0 m long and makes an angle of 60.0° counterclockwise from the y-axis (on the side of the −x-axis). What are the x- and y-components of this vector?

Q: A hanging plant is suspended by a cord from a hook in

A hanging plant is suspended by a cord from a hook in the ceiling. Draw an FBD for each of these: (a) the system consisting of plant, soil, and pot; (b) the cord; (c) the hook; (d) the system cons...

Q: Vector / has magnitude 4.0 units;

Vector / has magnitude 4.0 units; vector / has magnitude 6.0 units. The angle between / And is 60.0°. What is the magnitude of

Q: A barge is hauled along a straight-line section of canal

A barge is hauled along a straight-line section of canal by two horses harnessed to tow ropes and walking along the tow paths on either side of the canal. Each horse pulls with a force of 560 N at an...

Q: A woman who weighs 600 N sits on a chair with her

A woman who weighs 600 N sits on a chair with her feet on the floor and her arms resting on the chair's armrests. The chair weighs 100 N. Each armrest exerts an upward force of 25 N on her arms. The s...

Q: Find the x- and y-components of the four vectors

Find the x- and y-components of the four vectors shown in the drawing. Problems 22–24

Q: (a) Calculate your weight in newtons. (b

(a) Calculate your weight in newtons. (b) What is the weight in newtons of 250 g of cheese? (c) Name a common object whose weight is about 1 N.

Q: In each of these, the x- and y-components

In each of these, the x- and y-components of a vector are given. Find the magnitude and direction of the vector. (a) x = −5.0 cm, y = +8.0 cm. (b) Fx = +120 N, Fy = −60.0 N. (c) vx = −13.7 m/s, vy...