SCIENCE 9 QUARTER 4 REVIEW

Among the following variables, which one is not a vector quantity?

• acceleration 

• displacement

• distance  

• velocity

It is the distance travelled over time.

• A. Acceleration

•  B. Free Fall

• C. Velocity

• D. None of the above

It is an object thrown with an initial horizontal velocity and acted upon by the earth’s pull of gravity.

• A. Velocity

• B. Friction

• C. Gravity

• D. Projectile

Projectile follows a _____________ path.

• A. Parabolic

• B. Hyperbolic

• C. Trigonometric

• D. Vertical

Jeepney (Mass = 2000kg) (Velocity = 10m/s)

Motor Cycle (Mass = 300kg) (Velocity = 20m/s)

In the table above, What is the momentum of the jeepney?

• A. 6000 kgm/s

• B. 40000 kgm/s

• C. 20000 kgm/s

• D. 3000 kgm/s

Jeepney (Mass = 2000kg) (Velocity = 10m/s)

Motor Cycle (Mass = 300kg) (Velocity = 20m/s)

Which has greater momentum, the jeepney or the motorcycle?

• A. Jeepney

• B. Motor Cycle

• C. Both have the same momentum

• D. Cannot be determined

The impulse experience by a body is equal to the change in its __.

• A. velocity

• B. Kinetic Energy

• C. Momentum

• D. Potential Energy

The Law of Conservation of Momentum states that the total momentum of a system does not change if there are no net external forces acting on it. This means that _______

.

• A. Total Initial Momentum is equal to the Total Final Momentum.

• B. Total Initial Momentum is not equal to the Total final momentum

• C. Total initial momentum should be greater than the total final momentum.

• D. Total initial momentum should be lesser than the total final momentum.

Which event does NOT describe potential energy being changed into kinetic energy?

• A. A car rolls down a hill

• B. A rubber foam is being compressed

• C. A student lets go a stretched rubber band

• D. A twig falls from a branch

This is energy at rest.

• A. Potential Energy

• B. Kinetic Energy

• C. Rest Energy

• D. Motion Energy