A projectile is launched at an angle ? above the horizontal. Three seconds later the projectile is moving the same angle ? below the horizontal. Which of the following (actual values with units, not just algebraic symbols) can be found from the information given?
a. the initial vertical component of the projectile's velocity
b. the initial horizontal component of the projectile's velocity
c. the initial magnitude of the velocity
d. None of the above since at least one of the above must be given to find the other two values.
a
You might also like to view...
The ____________________ is the point on the celestial sphere directly above an observer, regardless of where the observer is located on Earth
Fill in the blank(s) with correct word
As you stand by the side of the road, a car approaches you at a constant speed, sounding its horn, and you hear a frequency of 80.0 Hz. After the car goes by, you hear a frequency of 60.0 Hz
What is the speed of the car? The speed of sound in the air is 343 m/s. A) 25.0 m/s B) 64.0 m/s C) 36.0 m/s D) 16.0 m/s E) 49.0 m/s
Two children are riding on a merry-go-round. Child A is at a greater distance from the axis of rotation than child B. Which child has the larger tangential speed?
A) Child A B) Child B C) They have the same zero tangential speed. D) They have the same non-zero tangential speed. E) There is not enough information given to answer the question.
Which one has larger kinetic energy: a 500-kg object moving at 40 m/s or a 1000-kg object moving at 20 m/s?
A) The 500-kg object B) The 1000-kg object C) Both have the same kinetic energy.