If both the mass and the velocity of ballare tripled the translational kineticehenay of the ball...
if both mass and velocity of a ball are tripled, the kinetic energy is increased by a factor of
1. What is the linear (translational) analog for torque? A. Mass B. Acceleration C. Velocity D. Force 2. What is the linear (translational) analog for the 'moment of inertia'? A. Velocity B. Mass C. Force D. Acceleration 3. The torque on a lever arm is maximized when the force is forming what angle with the lever arm? A. 45 degrees B. 90 degrees, or perpendicular to the lever C. 60 degrees D. 0 degrees or parallel to (alongside) the lever
lleling the develop Where vcom is the translational velocity of the center of mass and the second term on the right is the rotational velocity with respect to the center of mass. Show that the kinetic energy of the rigid body becomes, T =?m@om. Oom) +:@. ?lla bi) 1 where M is the total mass of the object.
a) Two identical balls (mass m, radius r) roll with (translational or CM) velocity v along a flat surface. The balls then roll up inclines, one incline has friction, the other does not. Prove which ball reaches higher up its ramp. b) Imagine a pulley wheel of mass mp and radius rp, and suspended over this pulley are two masses, m1 and m2. If m2 > m1 and m1 starts from rest at a position h lower than m2, how...
A billiard ball with a mass of 0.15 kg is moving with a velocity of < 5, 0, 0 > m/s. It collides with a 2nd billiard ball of mass 0.20 kg initially moving at < -7, 0, 0 > m/s. After the collision, you observe the 2nd billiard ball moving at < 0.13, 0, 0 > m/s. a) What is the velocity of the 0.15 kg billiard ball after the collision? b) What is the vector change in momentum...
4) A ball with a mass of 0.15 kg has a velocity of 5 m/s. It strikes a wall perpendicularly and bounces off straight back with a velocity of 2 m/s. The ball underwent a change in momentum equal to (There is only one answer) (2p) A) 0.20 kg. m/s B) 1.20 kg. m/s C) 1.05 kg. m/s D) 6 kg. m/s E) 8.5 kg. m/s 5) A 2-kg mass moving with a velocity of 6 m/s collides elastically with...
4. A red ball with a velocity of +3.0 m/s collides head-on with a yellow ball of equal mass mo a velocity of -2.0 m/s. What is the velocity of the yellow ball after the collision? (a) +3.0 m/s (b) zero (c) +5.0 m/s (d) +2.0 m/s 5. Suppose a satellite were orbiting the Earth just above the surface. What is its centripe (a) equal to g (b) smaller than 9 (c) larger than 9 (d) Impossible to say without...
The inductive reactance in an ac circuit changes by what factor when the frequency is tripled? Explain. a. 1/3 b. 1/9 c. 3 d. 9
Imagine two billiard balls on a pool table. Ball A has a mass of 2 kilograms and ball B has a mass of 3 kilograms. The initial velocity of ball A is 9 meters per second to the right and the initial velocity of the ball B is 6 meters per second to the left. The final velocity of ball A is 9 meters per second to the left, while the final velocity of ball B is 6 meters to...
A ball of mass 0.205 kg with a velocity of 1.54 î m/s meets a ball of mass 0.299 kg with a velocity of -0.393 î m/s in a head-on, elastic collision. (a) Find their velocities after the collision. (b) Find the velocity of their center of mass before and after the collision.