Pre-Test Assessment Forces and Newton's Laws 2018.19

Two students are working together to build a birdhouse. Student 1 applies a force of 10 N to a wooden board in order to slide it across a table to Student 2. If the force of friction resisting the student's push is 4 N, what is the net force acting on the board?

• 4 N

• 6 N

• 10 N

• 14 N

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Two cars with different masses travel at the same speed down a hill toward a stop sign. What will happen when both are apply brakes at the same time to stop?

• The car with the smaller mass will require less force to stop then the car with the larger mass.

• The car with the larger mass will maintain its velocity while traveling down the hill.

• The car with the smaller mass will take longer to stop than the car with the larger mass.

• The car with the larger mass will have less inertial than the car with the smaller mass.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

The masses of four vehicles and the net forces acting on them as they enter a highway are recorded in the table below.

Which vehicle has the greatest acceleration as it enters the highway?

• Sedan

• Coupe

• SUV

• Truck

Tags

NGSS.MS-PS2-2

The diagram shows two different forces acting on a cyclist riding a bicycle.

The total mass of the cyclist and the bicycle is 100 kg. Based on this information, what is the acceleration of the cyclist?

• .66m/s² backward, because the force of the air slows the cyclist down

• .66m/s² forward, because the applied force is greater than the force of the air

• 2.3m/s² backward, because the forces are opposite and not equal

• 2.3m/s² forward, because the cyclist's inertia is greater than the force of the air

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

For an investigation, a student measures the speed of a cart as it rolls down a ramp. The student then records data in the table. Which of these best explains the student's data?

• The speed of the cart decreases as the cart rolls down the ramp because of friction between the cart and the ramp.

• The speed of the cart increases as the cart rolls down the ramp because the force acting on the cart is greater than the force of gravity.

• The speed of the cart increases as the art rolls down the ramp because the forces acting on the cart are unbalanced.

• The speed of the cart decreases as the cart rolls down the ramp because the forces acting on the cart are balanced.

Tags

NGSS.MS-PS2-2

A student used a video camera to record another student dropping a marble through water in a graduated cylinder. The students watched the video in slow motion and made the observations shown.

During which part or parts of the marble's fall did the marble experience unbalanced forces?

• part 1 only

• parts 1 and 2 only

• part 3 only

• parts 2 and 3 only

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The diagram shows a homemade car being pushed with a force of 25 N.

The force causes the car to move at a constant speed of

3 m/s. What will happen if the force is changed to 35 N?

• The car will move at a constant speed of 13 m/s.

• The speed of the car will not change.

• The speed of the car will increase.

• The speed of the car will decrease to 1 m/s.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Four students push carts filled with sports equipment across the gym. Each student pushes with the same amount of force. Which cart has the greatest change in speed?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-2

The list includes six situations.

Which objects in the list experience an unbalanced force?

• The book, the ball, and the car.

• The ball, the car, and the bird.

• The can, the swing, and the bird.

• The book, the ball, the can and the swing.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A golfer hits a golf ball with a club. The mass of the ball is 0.05 kg. The ball accelerates at 2,000 m/s².

What is the net force, the the nearest Newton, that accelerates the ball?

• 40,000 N

• 100 N

• 1000 N

• 2.5 N

Tags

NGSS.HS-PS2-1