2025 Physics questions answers Graded A+
1.An object is dropped and freely falls to the ground with an acceleration
of 1 g. If it is thrown upward at an angle instead, its acceleration will be:
1g downward
2.Which one of the following is an example of a vector quantity: velocity
3.Ignoring air resistance, the horizontal component of a projectile's velocity-
: remains constant
4.At what angle should a water-gun be aimed in order for the water to
land with the greatest horizontal range?: 45 degrees
5.A ball is thrown with a velocity of 20 m/s at an angle of 60 degrees above
the horizontal. What is the horizontal component of its instantaneous
velocity at the exact top of its trajectory?: 10 m/s
6.On a calm day (no wind), you can run a 1500-m race at a velocity of 4.0
m/s. If you ran the same race on a day when you had a constant headwind
which slows your speed by 2.0 m/s, the time it would take you to finish
would be: 750 s.
7.You are throwing a ball for the second time. If the ball leaves your hand
with twice the velocity it had on your first throw, its horizontal range R
1/
5
, (compared to your first serve) would be: four times as much
8.Which of the following is not a vector quantity?: speed
9.A stone is thrown horizontally from the top of a cliff. One second after it
has left your hand, its vertical distance below the top of the cliff is: 5 m.
10.A boat, whose speed in still water is 8.0 m/s, is directed across a river
with a current of 6.0 m/s. What is the speed of the boat as it crosses the
river?: 10.0 m/s
11.A pilot drops a bomb from a plane flying horizontally at a constant
velocity. Neglecting air resistance, when the bomb hits the ground the
horizontal location of the plane will: be over the bomb
12.The resultant of two vectors is the smallest when the angle between
them is: 180 degrees
13.An airplane travels at 141 km/h toward the northeast. What is its
compo- nent of velocity due north?: 100 km/h.
14.An Olympic athlete throws a javelin at four different angles above the
horizontal, each with the same speed: 30°, 40°, 60°, and 80°. Which two
throws cause the javelin to land the same distance away?: 30 degrees and
60 degrees
15.A plane flying horizontally at a speed of 50.0 m/s and at an elevation of
2/
5
1.An object is dropped and freely falls to the ground with an acceleration
of 1 g. If it is thrown upward at an angle instead, its acceleration will be:
1g downward
2.Which one of the following is an example of a vector quantity: velocity
3.Ignoring air resistance, the horizontal component of a projectile's velocity-
: remains constant
4.At what angle should a water-gun be aimed in order for the water to
land with the greatest horizontal range?: 45 degrees
5.A ball is thrown with a velocity of 20 m/s at an angle of 60 degrees above
the horizontal. What is the horizontal component of its instantaneous
velocity at the exact top of its trajectory?: 10 m/s
6.On a calm day (no wind), you can run a 1500-m race at a velocity of 4.0
m/s. If you ran the same race on a day when you had a constant headwind
which slows your speed by 2.0 m/s, the time it would take you to finish
would be: 750 s.
7.You are throwing a ball for the second time. If the ball leaves your hand
with twice the velocity it had on your first throw, its horizontal range R
1/
5
, (compared to your first serve) would be: four times as much
8.Which of the following is not a vector quantity?: speed
9.A stone is thrown horizontally from the top of a cliff. One second after it
has left your hand, its vertical distance below the top of the cliff is: 5 m.
10.A boat, whose speed in still water is 8.0 m/s, is directed across a river
with a current of 6.0 m/s. What is the speed of the boat as it crosses the
river?: 10.0 m/s
11.A pilot drops a bomb from a plane flying horizontally at a constant
velocity. Neglecting air resistance, when the bomb hits the ground the
horizontal location of the plane will: be over the bomb
12.The resultant of two vectors is the smallest when the angle between
them is: 180 degrees
13.An airplane travels at 141 km/h toward the northeast. What is its
compo- nent of velocity due north?: 100 km/h.
14.An Olympic athlete throws a javelin at four different angles above the
horizontal, each with the same speed: 30°, 40°, 60°, and 80°. Which two
throws cause the javelin to land the same distance away?: 30 degrees and
60 degrees
15.A plane flying horizontally at a speed of 50.0 m/s and at an elevation of
2/
5
