Laws of motion

The momentum of an object depends upon the object's ___________&_____________.  

• size and shape
• mass and speed
• mass and veloctiy
• mass and energy

Tags

CCSS.7.RP.A.3

Which object listed below has the greatest momentum?

• A 0.05 kg object rolling at 0.2 m/s.
• A 0.15 kg object rolling at 2 m/s.
• A 0.15 kg object rolling at 1 m/s
• A 0.4 kg object rolling at 2 m/s.

Tags

NGSS.HS-PS2-2

Which of the following has the greatest momentum?

• a scurrying cockroach

• a parked semi-truck

• more information is needed

Tags

NGSS.HS-PS2-2

The harder you hit a baseball, the faster it accelerates.

• Newton's

  1st

  Law of Motion

• Newton's

  2nd

  Law of Motion

• Newton's

  3rd

  Law of Motion

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The formula 
? = mass x acceleration
or 
? = m x a 
is used to find 

• Force
• Velocity
• Momentum
• Gravity

Tags

NGSS.MS-PS2-2

Complete the law:

For every action, there is an ____________ reaction.

• equal and opposite

• equal

• opposite

• bigger and better

Tags

NGSS.MS-PS2-1

A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?

• For every action there is an equal and opposite reaction.
• Every mass exerts a force on every other mass.
• An object at rest tends to stay at rest.
• Friction opposes the motion of an object.

Tags

NGSS.MS-PS2-1

Keeping applied force constant ,if you increase the mass on an object, its acceleration

• decreases

• stays the same

• also increases

• stops

What would be the reaction force, if the action force is 60 N to the right?

• 60 N to the right

• 60 N to the left

• 30 N to the left

• 9.8 N to the right

Cricketer use to pull his hands backwards/downwards while catching ball , this is to ________

• Reduce the acceleration of ball

• increase time duration to reduce momentum to zero so that force decreases

• as he is afraid of ball

• none of the above