CBA 1 Review

What is NOT true about an object’s motion when the net force is equal to 0 N?

• The object is NOT accelerating

• Forces acting on the object are balanced

• The object changing its motion

• The object is moving at a constant velocity

What is NOT true about mass?

• acceleration and mass are directly proportional (Fnet=ma)

• combined with motion to describe momentum (p=mv)

• small amounts of mass can be converted into large amounts of energy (E=mc^2)

• larger mass allows greater acceleration at the same net force (Fnet=ma)

Tags

NGSS.MS-PS2-2

What is the quantity that designates how fast and in what direction an object is moving?

• Speed

• Velocity

• Momentum

• Force

Tags

NGSS.MS-PS3-1

What is momentum?

• Momentum is the quantity of motion of a moving body, measured as the product of its mass and velocity.
  

• Momentum is the same as velocity.

• Momentum is the amount of work done on a system.

• Momentum only occurs on an object at rest

Tags

NGSS.MS-PS3-1

Which describes an object moving with the greatest acceleration?

• largest change in velocity over time

• no change in velocity over a time period

• mass increasing with constant force

• smallest slope on a velocity/time graph

Tags

NGSS.MS-PS2-2

What if a battery were removed from a multi-battery circuit with a light bulb?

• more intense light since there is less power

• same amount of light since there is still a battery

• less intense light from bulb since there is less power

When is the VALUE of acceleration the GREATEST?

• t=0 to 14 seconds

• t=14 to 44 seconds

• t=44 to 54 seconds

• t=54 to 60 seconds

Tags

NGSS.MS-PS2-2

If the mass of the object is 10 kg, select the best description of the object's net force and acceleration.

• 3 N to the right at 30 m/s^2

• 3 N to the left at 0.3 m/s^2

• 3 N to the right at 0.3 m/s^2

• 3 N to the right at 3.3 m/s^2

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Which statement is TRUE when looking at the picture?

• If a force of 3 N left was added to the object, it would accelerate to the left.

• If another force was added to the right, the object would accelerate more.

• If a force of 3 N left was added to the object, it would accelerate to the right.

Tags

NGSS.MS-PS2-2

TRUE or FALSE: The law of conservation of energy does not always exist in an open system.

• TRUE

• FALSE