3Q PRETEST 2223

What is the SI unit for velocity?

• m

• m/s

What is the constant value of gravity?

Which of the following forces acts on objects in projectile motion?

• gravity

• air resistance

• friction

• applied force

Which refers to the horizontal distance covered by a projectile?

• trajectory

• range

• height

• displacement

What will happen to a projectile launched at an angle if there is no gravity?

• Its velocity will increase as it moves upward.

• It will remain at rest.

• It will still follow a curved path.

• It will follow a straight path upward.

Which of the following statements describes momentum?

• It is the product of body's mass and acceleration.

• It is the product of body's mass and velocity.

• It is the sum of body's mass and velocity.

• It is the sum of body's mass and acceleration.

What is the momentum of an object at rest?

• zero

• constant

• increasing

• decreasing

Kinetic energy is ____________?

• Energy in motion

• Energy at rest

Which of the following devices would help lessen injuries brought by vehicular collision?

• airbag

• seatbelt

• audio system

• windshield

Who pioneered the study of law of conservation of energy?

• John Robert Mayer

• Sir Isaac Newton

• Archimedes

• James Prescott Joule