Forces and Motion Test Review

Which of Newton's laws is illustrated when a magician pulls a tablecloth out from under the dishes without disturbing them?

• first
• second
• third 
• fourth

Tags

NGSS.MS-PS2-1

You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.

• 20N 
• 40N 
• 10N 
• 70N

Tags

NGSS.MS-PS2-1

Which of Newtons laws  best explains why football teams have big, large, fast athletes.

• Gravity
• second law
• first law
• Third law

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Newton's third law states that any action will have a(n) _______ and ______ reaction

• Equal and similar
• Equal and opposite
• Equal and different
• Greater and opposite

Tags

NGSS.MS-PS2-1

The image below shows two opposite forces acting during Tug-a-war, what can we say is true about the effect of the forces on the cart?

• It cannot be determined without knowing which team is stronger.

• The forces are unbalanced, and net force on the rope moves it to the left.

• It cannot be determined because one team looks stronger than the other.

• The forces are unbalanced, and net force on the rope moves it to the right.

Which of these is an example of Newton's First Law of Motion?

• A pencil being thrown across the classroom.

• A volleyball thrown in the air falls to the ground.

• A baseball remains motionless until it is thrown by a player.

• A hockey player pushes off from a wall and moves backwards.

When you paddle a boat, as you row the paddle backwards the boat moves forward. Which law is this an example of?

• For every action, there is an equal and opposite reaction.

• An object at rest tends to stay at rest.

• Friction opposes the motion of an object.

• Every mass exerts a force on every other mass.

A roller coaster containing three cars is accelerating at 10 m/s before it comes to an abrupt stop at the end of the ride. The mass of each car is 300 kg. How much force was exerted on the roller coaster to bring it to a stop?

• 30 N

• 900 N

• 3000 N

• 9000 N

Which answer choice best describes the movement of the object between the times of 0 and 6 seconds on the graph?

• Moving at a constant speed

• Accelerating

• Moving toward the north

• Stopped

A block is pulled 0.90 m to the right in 2.5 s. What is the block's average speed to the nearest hundredth of a m/s?

• 2.25 m/s

• 2.77 m/s

• .36 m/s

• .036 m/s