OAT phys questions conceptual questions
and answers
A baseball is thrown vertically in the air so that it returns to the ground exactly
from where it was thrown. At what point during its motion does the baseball have
the lowest speed (ignore air resistance)? - at its highest point
A baseball is thrown vertically in the air so that it returns to the ground exactly
from where it was thrown. At what point during its motion does the baseball
experience the lowest acceleration? - the acceleration is the same throughout the
baseball's motion (9.8 m/s^2)
If two projectiles are fired at the same angle above the horizontal, but the 2nd is
fired with twice the initial velocity of the 1st, then which of the following are true?
1. The 2nd projectile will travel twice as far.
2. The 2nd projectile will have twice the max height.
3. The time of flight of the 2nd projectile will be twice as long - 3. The time of
flight of the 2nd projectile will be twice as long
Two kickers each kick a football in the air at exactly the same moment. The first
kicks it straight up into the air with an initial velocity of 20m/s. The second kicks it
at an angle of 30° above the ground with an initial velocity of 40m/s. Which
kicker's ball will hit the ground first? - They will hit the ground at the same time
,OAT phys questions conceptual questions
and answers
Which of the following is true regarding an object moving with projectile motion?
- 1. The object's acceleration is always directed downwards'
2. The object's horizontal and vertical motion are independent of one another
3. Increasing the object's vertical velocity component while keeping the horizontal
velocity constant increases its range
A 10kg object has two forces acting on it, FA and FB. If the object is decelerating,
which of the following statements must be true? - Fa+Fb < 0
Object A has 1/3 the mass of object B. If the same net force is applied to both A
and B, which of the following is true: - The acceleration of B is 1/3 the acceleration
of A
A 3 kg rifle fires a bullet of mass 3 grams with muzzle velocity of 300 m/s. Which
of the following is true? - The acceleration of the bullet is 1000 times greater than
the recoil acceleration of the rifle.
, OAT phys questions conceptual questions
and answers
A net force, F, is applied to a stationary object so that it accelerates from rest to a
velocity, v, in time t. Which of the following represents the force applied to reach
the same velocity in t/2? - 2F
If 'F' is the gravitational force, which of the following represents the gravitational
force between the two bodies if the distance between them doubles? - F/4
A man travels to a planet that has twice the radius of the earth and twice the
mass. What is his weight on this planet relative to his weight on Earth? - 1/2
A boy pushes three wooden toy blocks of equal mass with net force F along the
floor in a line, one in front of the other. The boy pushes on block A which in turn
pushes block B which pushes block C. Which of the following is true? - Both the
acceleration and net force on each block are the same
As you push a heavy box horizontally across the floor, causing it to accelerate, the
equal and opposite reaction force, according to Newton's third law is due to - The
box pushing back on you
and answers
A baseball is thrown vertically in the air so that it returns to the ground exactly
from where it was thrown. At what point during its motion does the baseball have
the lowest speed (ignore air resistance)? - at its highest point
A baseball is thrown vertically in the air so that it returns to the ground exactly
from where it was thrown. At what point during its motion does the baseball
experience the lowest acceleration? - the acceleration is the same throughout the
baseball's motion (9.8 m/s^2)
If two projectiles are fired at the same angle above the horizontal, but the 2nd is
fired with twice the initial velocity of the 1st, then which of the following are true?
1. The 2nd projectile will travel twice as far.
2. The 2nd projectile will have twice the max height.
3. The time of flight of the 2nd projectile will be twice as long - 3. The time of
flight of the 2nd projectile will be twice as long
Two kickers each kick a football in the air at exactly the same moment. The first
kicks it straight up into the air with an initial velocity of 20m/s. The second kicks it
at an angle of 30° above the ground with an initial velocity of 40m/s. Which
kicker's ball will hit the ground first? - They will hit the ground at the same time
,OAT phys questions conceptual questions
and answers
Which of the following is true regarding an object moving with projectile motion?
- 1. The object's acceleration is always directed downwards'
2. The object's horizontal and vertical motion are independent of one another
3. Increasing the object's vertical velocity component while keeping the horizontal
velocity constant increases its range
A 10kg object has two forces acting on it, FA and FB. If the object is decelerating,
which of the following statements must be true? - Fa+Fb < 0
Object A has 1/3 the mass of object B. If the same net force is applied to both A
and B, which of the following is true: - The acceleration of B is 1/3 the acceleration
of A
A 3 kg rifle fires a bullet of mass 3 grams with muzzle velocity of 300 m/s. Which
of the following is true? - The acceleration of the bullet is 1000 times greater than
the recoil acceleration of the rifle.
, OAT phys questions conceptual questions
and answers
A net force, F, is applied to a stationary object so that it accelerates from rest to a
velocity, v, in time t. Which of the following represents the force applied to reach
the same velocity in t/2? - 2F
If 'F' is the gravitational force, which of the following represents the gravitational
force between the two bodies if the distance between them doubles? - F/4
A man travels to a planet that has twice the radius of the earth and twice the
mass. What is his weight on this planet relative to his weight on Earth? - 1/2
A boy pushes three wooden toy blocks of equal mass with net force F along the
floor in a line, one in front of the other. The boy pushes on block A which in turn
pushes block B which pushes block C. Which of the following is true? - Both the
acceleration and net force on each block are the same
As you push a heavy box horizontally across the floor, causing it to accelerate, the
equal and opposite reaction force, according to Newton's third law is due to - The
box pushing back on you
