When a pendulum is at the midpoint of its oscillation, hanging straight down, which statement is true?
Both kinetic energy and potential energy are at their maximum.
Both kinetic energy and potential energy are at their minimum.
Kinetic energy is maximum and potential energy is minimum.
Kinetic energy is minimum and potential energy is maximum.
Both kinetic energy and potential energy are at intermediate values

Question

When a pendulum is at the midpoint of its oscillation, hanging straight down, which statement is true?
Both kinetic energy and potential energy are at their maximum.
Both kinetic energy and potential energy are at their minimum.
Kinetic energy is maximum and potential energy is minimum.
Kinetic energy is minimum and potential energy is maximum.
Both kinetic energy and potential energy are at intermediate values

anonymous · Answer

the 1st one

anonymous · Answer

i just did this and got it correct

anonymous · Answer

medal?

anonymous · Answer

A car with a mass of 1.1 × 103 kilograms hits a stationary truck with a mass of 2.3 × 103 kilograms from the rear end. The initial velocity of the car is +22.0 meters/second. After the collision the velocity of the car is -11.0 meters/second. What is the velocity of the truck after this elastic collision?

+13 meters/second
+20 meters/second
+15.7 meters/second
+7.5 meters/second
+9.8 meters/second