Forces and Motion in Two Dimensions

What is the x component of a 60 N force at 30 degrees above -x?

• -30 N

• -52 N

• 30 N

• 52 N

Tags

NGSS.HS-PS2-1

If the sign is 300 N, What is the tension for either wire?

• 96 N

• 150 N

• 196 N

• 233 N

Tags

NGSS.HS-PS2-1

What is the normal force for a 10 kg sled being pulled with a 40 N force at 30 degrees above +x on a frictionless surface?

• 80 N

• 100 N

• 120 N

• 65 N

• 135 N

Tags

NGSS.HS-PS2-1

A 50 N sign hangs from 2 wires each at 30 degrees. What is the tension in the wires?

• 25 N

• 50 N

• 58 N

• 100 N

Tags

NGSS.HS-PS2-1

Which of the following statements is ALWAYS true of an object in equilibrium? (more than one answer is correct)

• The object maintains its state of motion.

• The object is at rest.

• The object is not accelerating.

• The object's velocity is not changing.

• The sum of all forces acting on the object is 0.

Tags

NGSS.HS-PS2-2

A bug hits the windshield of a car. The force of the bug on the car is ____________ compared to the force of the car on the but.

• equal to

• less than

• greater than

• it depends on the type of bug

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A bug hits the windshield of a car. The acceleration experienced by the bug is ___________ compared to the acceleration of the car.

• equal to

• less than

• greater than

• it depends on the model of the car

Tags

NGSS.HS-PS2-1

How would you find the magnitude of a resultant vector that has an x component of 8 N and a y component of 6 N?

• Square Root of (8^2 + 6^2)

• Square Root of (8^2 - 6^2)

• Tan^-1 (8/6)

• Tan^-1 (6/8)

What is the normal force for a 20 kg suitcase being pulled with a 50 N force at 30 degrees above +x?

• 157 N

• 200 N

• 243 N

• 175 N

• 225 N

Tags

NGSS.HS-PS2-1

Which law states that an object in motion will stay in motion unless an unbalanced force acts upon it?

• Newton's 1st law

• Newton's 2nd law

• Newton's 3rd law

• Law of Gravity