Two identical grasshoppers jump into the air with the same initial speed and experience no air resistance. Grasshopper A goes straight up, but grasshopper B goes up at a 66° angle above the horizontal
Which of the following statements about these grasshoppers are correct? (There could be more than one correct choice.) A) At their highest point, both of them have the same amount of gravitational potential energy.
B) At their highest point, both of them have the same amount of kinetic energy.
C) At their highest point, both of them have the same amount of mechanical energy.
D) At their highest point, grasshopper B is moving faster than grasshopper A.
E) At their highest point, grasshopper A has more gravitational potential energy than grasshopper B.
C, D, E
You might also like to view...
Traveling from Earth to the Moon requires that a rocket have
A) less than escape speed from Earth. B) more than escape speed from Earth. C) any sustained speed if time isn't a factor.
In an annular eclipse,
A) the Sun appears as a thin, bright ring. B) the Moon appears as a thin, bright ring. C) the Moon is totally blocked by the Earth. D) the Sun is partially blocked by the Earth. E) the Sun is totally blocked by the Moon.
A rock is thrown straight up with an initial velocity of 15.0 m/s. Ignore energy lost to air friction. How high will the rock rise?
a. 7.5 m b. 113 m c. 23.0 m d. 11.5 m e. 0.0871 m
Provides online astronomical info, such as sunrise and sunset times