Multiple Choice
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.
Correct Answer:

Verified
Correct Answer:
Verified
Q13: At what minimum rate is a 60.0-kg
Q15: A stone can slide down one of
Q16: A toy rocket that weighs 10 N
Q17: If the work done to stretch an
Q19: If a spring-operated gun can shoot a
Q20: An ideal spring has a spring constant
Q21: A certain battery charger uses 12 W
Q22: A heavy stone and a light stone
Q23: A 1-kg ball is released from a
Q71: If a stone is dropped with an