An object hits a wall and bounces back with half of its original speed. What is the ratio of the final kinetic energy to the initial kinetic energy?
A) 1/2
B) 1/4
C) 2
D) 4
E) 8
B
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What is the speed of these two sea creatures just after their collision? You can neglect any drag effects of the water during the collision. A) 0.00 m/s B) 3.0 m/s C) 4.0 m/s D) 5.0 m/s E) 6.0 m/s
A hoop, solid sphere, and solid cylinder each have the same mass and same radius. When rolling down the same incline, which has the greatest torque from gravity on it?
a. the hoop b. the sphere c. the cylinder d. They all have the same torque.
Unlike electric potential, the electric potential energy is a vector quantity
Indicate whether the statement is true or false
In a single-slit diffraction experiment, the first minimum in the diffraction pattern occurs at an angle given by sin? = 2?/W
Indicate whether the statement is true or false