Remedial Model Questions

Which of the following best describes the concept of a vector?

• A quantity with magnitude only

• A quantity with direction only

• A quantity with magnitude and direction

• A quantity with neither magnitude nor direction

What is the displacement of an object that travels 10 meters north, then 15 meters east?

• 10 meters

• 15 meters

• 17 meters

• 25 meters

In two-dimensional motion, what is the acceleration of an object moving in a circular path at constant speed?

• Zero

• Tangential to the path

• Directed toward the center of the circle

• Directed away from the center of the circle

A projectile is launched at an angle of 45 degrees with the horizontal. At the highest point of its trajectory, its velocity is:

• Zero

• Horizontal

• Vertical

• Equal to the initial velocity

What is the acceleration due to gravity at the center of the Earth?

• Zero

• Approximately 9.8 m/s²

• Approximately 5.6 m/s²

• Approximately 0.5 m/s²

Which of Newton's laws states that an object at rest will remain at rest, and an object in motion will remain in motion unless acted upon by an external force?

• First law

• Second law

• Third law

• Law of universal gravitation

What is the force required to accelerate a 10 kg object at a rate of 5 m/s²?

• 2 N

• 10 N

• 20 N

• 50 N

Which of the following is a conservative force?

• Friction

• Drag

• Gravity

• Tension

What is the angular momentum of a rotating object?

• Mass times velocity

• Moment of inertia times angular velocity

• Mass times acceleration

• Force times time

According to the work-energy theorem, the work done on an object is equal to:

• The change in kinetic energy of the object

• The change in potential energy of the object

• The force exerted on the object

• The displacement of the object