TEK 8.6(A) Unbalanced Forces Quiz

Use Newton's second law of motion to calculate the acceleration of a 7 kg mass if a force of 68.6 N acts on it?

• 0.1 m/s/s

• 9.8 m/s/s

• 68.6 m/s/s

• 480.2 m/s/s

Tags

NGSS.MS-PS2-2

The mass of a large car is 1000 kg. How much force would be required to accelerate the car at a rate of 3 m/sec²?

• 3000N

• 300N

• 30N

• 333N

Tags

NGSS.MS-PS2-2

A force of 250 N is applied to an object that accelerates at a rate of 5 m/sec². What is the mass of the object?

• 1250kg

• .02kg

• 50kg

• 5kg

Tags

NGSS.MS-PS2-2

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 the 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-PS2-2

Deep Space 1 was a spacecraft powered by an engine that gave off xenon particles to change velocity. It had a mass of 500 kg. Which expression can be used to find the spacecraft's acceleration if its engine created a net force of 0.10 N?

• 0.10 N $\div$ 500 kg

• 500 kg $\times$ 0.10 N

• 500 kg $\times$ 0.10 N

• 500 kg $+$ 0.10 N

Tags

NGSS.MS-PS2-2

Some students measure the acceleration of a wheeled cart being acted on by varying forces, the students record their data in the table shown. According to the data table, how much force is acting on the cart when the students measure an acceleration of 2.6 m/s^2?

• 13 N 

• 7 N 

• 8 N 

• 12 N 

Tags

NGSS.MS-PS2-2

The diagram below shows a boat moving north in a river at 3 m/s while the current in the river moves south at 1 m/s.

How will the boat be affected if it enters a part of the river where the current is moving south at 2 m/s?

• The boat will move faster.

• The boat will move slower.

• The boat will stop.

• The boat will move to the west.

Tags

NGSS.MS-PS2-2

The diagram shows a sled moving along a smooth, frictionless track.

In what sections of the track will the sled experience an unbalanced force?

• Sections 1 and 3

• Sections 3 and 4

• Sections 2 and 3

• Sections 2 and 4

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

For an investigation, a student measures the speed of a cart as it rolls down a ramp. The student then records the 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 cart 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