Force and Motion - 6th Grade

What is a force?

• The push or pull on an object

• The motion an object creates

• The objects hitting one another

• Going really fast

Answer explanation

A force is defined as the push or pull on an object, making the correct answer choice 'The push or pull on an object.'

What is the unit for FORCE?

• N (Newtons)

• lbs (pounds)

• g (grams)

• m/s (meters per second)

Answer explanation

The unit for FORCE is N (Newtons), which is the correct choice for measuring force in the International System of Units (SI).

What is the net force?

• 20 N 

• 0 N 

• 400 N 

• 40 N 

Answer explanation

The net force is 40 N because it is the only answer choice that matches the correct value.

A bicycle rode 210 meters in 3 minutes. What was the speed of the bicycle?

• 630 m/min

• 70 m/min

• 7 m/min

• 7,000 m/min

Answer explanation

To find the speed, divide the distance by the time: 210 meters / 3 minutes = 70 m/min. Therefore, the speed of the bicycle was 70 m/min.

Match the description to the graph:

"The car is stopped."

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Match the description to the graph:

"The car is traveling at a constant speed."

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Segment A-B: The bus is _________________.

• at rest

• returning (to original position)

• moving forward

Answer explanation

Segment A-B indicates the bus is not moving, hence it is at rest. Therefore, the correct choice is 'at rest'.

If these teams 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.

Answer explanation

If both teams are pulling with the same amount of force, they will not move at all due to the forces being balanced.

Calculate the Net Force. 

• 60N, Left 

• 40N, Right 

• 0N

• 60N, Right

Answer explanation

The net force is calculated by subtracting the forces in opposite directions. In this case, 100N to the right and 40N to the left result in a net force of 60N to the right.

The rate of change in an object's velocity

• acceleration

• applied force

• balanced force

• cause

Answer explanation

The correct answer is acceleration because acceleration is the rate of change in an object's velocity.