1. Two birds are flying directly towards each other at the same speed If the first bird is flying at a velocity v , what is the the velocity of the second bird?
a. v
b. -v
c. 2v
d. Impossible to determine
2. A Philippine Airlines jet is flying at 300 km/hr, while an Cebu Pacific Concord is speeding along at 1200 km/hr Both airplanes are flying at the same altitude If each aircraft experiences problems with an unruly passenger, and they both decide simultaneously to push the passenger out the door, which of the unruly passengers will hit the earth first? (Ignore air resistance)
a. Philippine Airlines passenger
b. Cebu Pacific Concorde passenger
c. They will hit the ground at the same time
d. Impossible to determine. Which passenger is heavier?
3. Kinematics is concerned with…
a. Understanding why objects move the ways they do
b. Describing the movement of objects
c. Action at a distance
d. None of the above
4. A raindrop on a drizzly day takes one minute from the time it leaves the cloud until it hits your umbrella, 3 miles below The average velocity of the raindrop on its journey is
a. 3 mi/hr
b. 60 mi/hr
c. 180 mi/hr
d. Impossible to determine.
5. The average velocity and the instantaneous velocity of an object will be the same if
a. The object’s speed is constant
b. The object’s acceleration is zero
c. the object’s velocity is always positive
d. They are never the same
6. A car traveling at constant velocity v suddenly brakes in an effort to keep from hitting a rabbit which is 8 ft away If the braking action causes a constant deceleration a , how long does it take for the car to come to a complete stop?
a. t = va
b. t = 8a/v
c. t = 8a
d. t = v/a
7. The office of the Harvard Review of Philosophy is located approximately 10 ft below the earth's surface The acceleration due to gravity experienced by members working in this office is
a. Significantly greater than that on the Earth’s surface
b. Significantly smaller than that on the Earth’s surface
c. Approximately equal to that on the Earth’s surface
d. Exactly equal to that on the Earth’s surface
8. What kind of function is an acceleration function describing one-dimensional motion?
a. A scalar-valued function
b. A vector-valued function
c. There is no such thing as acceleration in one dimension
d. A constant function
9. A couple of students at Ateneo decide to go bicycle riding one day. Simon rides at a speed of 10 miles per hour, while Liz's average speed is 20 miles per hour After bicycling for several hours, both Simon and Liz come home and park their bicycles exactly where they started. Simons's average velocity for the entire ride is
a. Lower than Liz’s average velocity
b. Greater than Liz’s average velocity
c. Zero
d. Impossible to determine
10. A police officer living on a planet with no air resistance drops a pair of handcuffs and a handkerchief from the same height at the same time Which one will reach the ground first?
a. The handkerchief
b. The handcuffs
c. Both will hit the ground at the same time
d. Impossible to determine
11. An elevator is moving upward with a speed of 11 m/s. Three seconds later, the elevator is still moving upward, but its speed has been reduced to 5.0 m/s. What is the average acceleration of the elevator during the 3.0 s interval?
a. 5.3 m/s2, downward
b. 5.3 m/s2, upward
c. 2.7 m/s2, downward
d. 2.0 m/s2, downward
e. 2.0 m/s2, upward
12. A racecar has a speed of 80 m/s when the driver releases a drag parachute. If the parachute causes a deceleration of -4 m/s2, how far will the car travel before it stops?
a. 1000 m
b. 800 m
c. 200 m
d. 20 m
e. 400 m
13. A ball is dropped from rest from a tower and strikes the ground 125 m below. Approximately how many seconds does it take for the ball to strike the ground afterbeing dropped? Neglect air resistance.
a. 12.5 s
b. 16.0 s
c. 2.50 s
d. 5.05 s
