PHYSICS KSSM FORM 4 CHAPTER 2

What is the speed of an object at rest?

• 9.81 m/s
• 1 m/s
• 0 m/s
• 10 m/s

Which of the following units is the SI unit of velocity?

• meter
• meter•second
• meter per second
• second per meter

Acceleration is defined as

• a rate of displacement
• the rate of change of displacement.
• the change in velocity
•  the rate of change of velocity.

Tags

NGSS.HS-PS2-1

What is the SI unit of acceleration? 

• m/s
• m2 /s
• m/s2
• m•s2

Tags

NGSS.HS-PS2-1

The graph above describes the motion of a ball. At what point does the ball have an instantaneous velocity of zero

• 1 second
• 2 seconds
• 3 seconds
• 4 seconds

Acceleration due to gravity is also called

• negative velocity
• displacement
• free-fall acceleration
• instantaneous velocity

Tags

NGSS.HS-PS2-4

When there is no air resistance, objects of different masses dropped from rest

• fall with equal accelerations and with equal displacements.
• fall with different accelerations and with different displacements.
• . fall with equal accelerations and with different displacements.
• fall with different accelerations and with equal displacements.

Tags

NGSS.HS-PS2-1

Which would hit the ground first if dropped from the same height in a vacuum—a feather or a metal bolt?

• . the feather
• the metal bolt
• They would hit the ground at the same time
• They would be suspended in a vacuum

Tags

NGSS.MS-PS2-2

The picture of the position vs. time graph shows an object that is...

• accelerating/speeding up
• moving at a constant speed 
• not moving 
• accelerating/slowing down. 

If these boys are pulling with the same amount of force.  What will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.