Force and Motion Review

Which statement is true about force and motion?

• For every force, there is a motion.

• Force and motion have the same meaning.

• People and nature produce forces, while machines produce motion.

• For every motion, there is a force.

Tags

NGSS.MS-PS2-1

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What will an object do if it has inertia?

• It will keep moving or stay at rest until a force acts upon it.

• It will stay at rest until a force acts upon it.

• It will keep moving until a force acts upon it.

• It will keep moving or stay at rest forever.

Bryce is pushing a cart filled with books down a hallway with a wooden floor.  Which change would help him move the cart more easily?

• putting fewer books on the cart

• removing the wheels

• carrying the cart instead of rolling it

• laying carpet over the wooden floor

Tags

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Erik pedals his bike along a flat sidewalk. Then he takes his feet off the pedals and does not use the brakes. What will cause his bicycle to slow to a stop?

• motion

• friction

• gravity

• speed

When Payton lifts her science book, she is applying a contact force.  Why is this a contact force?

• The book was once still.

• She put the book in motion.

• She touches the book to move it.

• The book touches the desk.

A(n) __________ is a push or a pull and can make an object stop, speed up, slow down, or change direction.

• unbalanced force

• balanced force

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JaShawn and Adrian are playing tug-of-war, They are pulling on the same rope, and the rope is not moving in either direction.  Why is the rope not moving?

• The forces are unbalanced.

• The force of friction is greater than the other forces.

• The forces are balanced.

• The force of gravity is acting against the other forces.

Which action is caused by a non-contact force?

• a parachute slowing down a skydiver

• a ball falling to the ground

• a baseball player sliding to a stop

• a soccer ball rolling to a stop

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Which of the following is an example of a balanced force?

• pushing a box up a ramp

• riding a skateboard downhill

• going down a slide

• leaning against a wall

The image shows the same type of wagon filled with boxes. All of the boxes are the same size and weight.  What could you do to make ALL of these wagons require the same amount of force to move them?

• put the same amount of boxes on each wagon

• add 2 more boxes to wagon C

• take 5 boxes off wagon B

Tags

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