Plane motion; Angular vel.

Please see attachments Answers given: .378 rads/sec; 160.4 mm/sec.

Determine locus of points

Please address 15-46 see attachments Ans. given: x = -87.5mm; y = 50 mm.

Constant Acceleration

A bird flies north at 20 m/s for 30 seconds. It rests for 18 seconds and then flies east at 25 m/s for 32 seconds. Find the average velocity for the entire trip? My answer was 12.5 m/s at 37 degrees north of East. This question comes from a homework problem-that is not expected to be handed in.

Finding Speed

Two planes leave simultaneously from the same airport, one flying due north and the other flying due east. The north bound plane is flying 50 miles per hour faster than the east bound plane. After 3 hours the planes are 2,440 miles apart. Find the speed of each plane. I made a guess at it because I really don't know how to figu ...continues

Angular acceleration, tangential speed, and angle turned, in radians, by a flywheel of known diameter.

A flywheel whose diameter D= 1.2 m, is initially rotating at Wo= 200 revolutions per minute. During time t- 60 sec, its rotation rate increases with constant acceleration to a final value of Wf= 1000 rev/min. Part a. find the initial tangential speed in m/sec, of a point on the rim. Part b. find the angular acceleration in ra ...continues

Uniform cylinder, moment of inertia by translation of axis.

A uniform cylinder, has mass 18 kg and radius .5 m. Its moment of inertia about an axis which is .3 m from the center of mass axis, is 3.87 kg m^2. Each axis is perpendicular to the circular face of the cylinder. Find the moment of inertia about an axis at the surface of the cylinder.

Newton's 2nd law

A 12.0-kg box rests on the flat floor of a truck. The coefficients of friction between the box and the floor are s=0.19 and k=0.15. The truck stops at a stop sign, and then begins to move with an acceleration of 2.20 m/s^2 . If the box is 1.80 m from the rear of the truck when the truck starts, (a) How much tim ...continues

Newton's 2nd law

Please see the attached file for full problem description. --- Kathy and her friend go sledding. Out of curiosity, she measures the constant angle, , that the snow-covered slope makes with the horizontal. Next, she uses the following method to determine the coefficient of friction, k, between the snow and th ...continues

Laws of Motion/Free Fall

When baseball players throw the ball in from the outfield, they usually allow it to take one bounce before it reaches the infield, on the theory that the ball arrives sooner that way. Suppose that the angle at which a bounced ball leaves the ground is the same as the angle at which the outfielder threw it, as shown in the figure ...continues

Projectile motion

A missile is launched at a speed of 25 m/s at an angle of to 35the ground. What is its range? How high did it go vertically? Answer without using calculus.