Science 9 Quarter 4

Which of the following statements is true for uniformly accelerated motion?

• The velocity increases at an increasing rate.

• The velocity increases at a constant rate.

• The velocity decreases at a constant rate.

• The velocity remains constant throughout.

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

• acceleration 

• displacement

• distance  

• velocity

Which of the following scenarios best shows a real-life situation involving uniformly accelerated motion in the horizontal dimension?

• A boat sailing smoothly across a calm lake.

• A skydiver falling freely from an airplane.

• A roller coaster descending from the top of a hill.

• A car traveling on a straight road at a constant speed.

Tags

NGSS.HS-PS2-1

In free fall, what is the only force acting on the object or body?

• air resistance

• friction

• gravity

• there is no force acting on the body

Tags

NGSS.MS-PS2-4

Which of the following quantities remains constant during uniformly accelerated motion in the vertical dimension?

• Velocity   

• Displacement 

• Acceleration

• Time

In uniformly accelerated motion in the vertical dimension, the acceleration is always:

• Positive    

• Zero

• Negative 

• Variable

Fidel throws the ball straight up with an initial velocity of 10 m/s. What is its velocity at the highest point?

• -10 m/s

• 0 m/s

• 10 m/S

• 20 m/s

Tags

NGSS.HS-PS3-2

What is the velocity of the ball when it returns to the same elevation from where it was initially thrown, considering that it was thrown straight up with an initial velocity of 10 m/s?

• -10 m/s

• 0 m/s

• 10 m/s

• 20 m/s

Which of the following scenarios demonstrates a real-life situation involving uniformly accelerated motion in the vertical dimension?

• A toy car being pulled by a constant force.

• A ball dropped from a certain height.

• A car driving at a constant speed on a straight road.

• A skateboarder pushing off and gliding along a flat surface.

Tags

NGSS.HS-PS2-4

Which of the following best describes a projectile motion?

 

• The motion of an object sliding down a slope.

• The motion of an object moving in a circular path.

• The combination of horizontal and vertical motions affected by gravity.

• The motion of an object thrown vertically upwards.