show that the angle between the final velocities is less than 90

a particle moves along the parabola with equation

The circular blade on a radial arm saw is turning at 255 rad/s at the instant the motor is turned off. In 23.0 s the speed of the blade is reduced to 90 rad/s. Assume the blade to be a uniform solid disk of radius 0.130 m and mass 0.400 kg. Find the net torque applied to the blade.

a solid uniform 45 kg ball of diameter 32 cm is supported against a vertical frictionless wall using a thin 30cm wire of negligible mass. make a free-body diagram for the ball and use it t find the tension in thw wire"

A proton moves at a speed of 1.98 multiplied by 107 m/s at right angles to the magnetic field with a magnitude of 0.15 T. Find the magnitude of the acceleration of the proton.

n the position shown collar B moves to the left with constant velocity of 300 mm/s. determine the velocity of collar A, the velocity of portion c of the cable and the relative velocity of portion c with respect to collar b

An outfielder throws a ball with an initial velocity of magnitude v1 at an angle of 10 degrees with the horizontal to the catcher 50m away. Knowing that the ball is to arrive at a height between 0.5 and 1.5m determine (a) the range of values for v1, (b) the range of values of the maximum height h...

1.A rope having a total mass of 0.4kg and total length 4m has 0.6m of the rope hanging vertically down off a work bench. How much work must be done to place all the rope on the bench?

law of motion?

A large sphere rolls without slipping across a horizontal surface. The sphere has a constant translational speed of 10 meters per second, a mass m of 25 kg, and a radius r of 0.2 meters. The moment of inertia of the sphere about its center of mass is I = 2/5 mr2. The sphere approaches a 25...