Force and motion Unit test review 2

What is inertia?

• A Force

• A property of matter

A student rolls a ball on different materials and measures the time it takes for it to roll down the ramp and records the results, what would be the best conclusion based on the data table below?

• Different balls travel at different speeds

• Gravity has little effect

• Different surfaces affect how fast it accelerates

• Air resistance has a great effect on the ball

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Unbalanced forces always _________.

• Speed

• Have Velocity

• Accelerate

Tags

NGSS.MS-PS2-2

If you dive off of a pool raft and go forward and the raft goes backwards, which of newton's three laws would apply?

• An object at rest will remain at rest

• For every action there is an equal and opposite reaction

• the more mass an object has the more force will be required to make it accelerate

Tags

NGSS.MS-PS2-1

If I leave my good thermal insulated cup on the top of my car and then suddently stop my car the cup will continue to move forward and off the car. Which law explains this motion?

• A body in motion tends to stay in motion unless acted upon by an outside force

• For every action there is an equal and opposite reaction

• Energy can not be created nor destroyed

True or False: Acceleration is a change in velocity.

• True

• False

What do you need to determine velocity of an object?

• the speed and direction

• how long an object was stationary

• how many times an object stopped

• the mass

Tags

NGSS.MS-PS3-1

3. Sally set her book on the edge of the table and it fell off. Which force caused it to fall to the ground?

• Momentum

• Friction

• Velocity

• Gravity

Tags

NGSS.MS-PS2-4

8. If two different arrows represent 2 different forces, what does the larger arrow represent?

• The greater force

• The lesser force

• Equal force

• Magnetic Force

The force that one surface exerts on another when the two surfaces come in contact and rub against each other.

• Gravity

• Inertia

• Acceleration

• Friction