Forces

In the free-body diagram, which of the following is the gravitational force acting on the balloon?

• 5120 N

• 950 N

• 1520 N

• 4050 N

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

Who wins the tug of war with what net force?

• The person on the left with 20 N
• The person on the left with 80 N
• The people on the right with 20 N
• The people on the right with 100 N

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Two forces act on an object to the right at the same time.  What force is required to bring the object into equilibrium?

• 9 N to the right
• 9 N to the left
• 3 N to the left
• 18 N to the left

Tags

NGSS.MS-PS2-2

Which of the following best explains the behavior of the objects shown in the picture?

• inertia
• weight
• normal force
• air resistance

Tags

NGSS.MS-PS2-2

Which statement is correct regarding the ball as it moves down the incline?

• It has a net force acting on it.
• All forces are balanced acting on it.
• The applied force is equal to friction.
• Its inertia is less than its mass.

Tags

NGSS.MS-PS2-2

The biker travels at constant velocity. All of the following are true except-

• he has a net force acting on him.

• the normal force is equal to his weight.

• the force of friction acts opposite the direction of his motion.

• the force of friction is equal to the forward force he applies.

Tags

NGSS.MS-PS2-2

If an object is traveling at constant velocity, which two forces will be equal?

• weight and net
• applied and frictional
• net and frictional
• net and applied

Tags

NGSS.MS-PS2-2

If an object is resting on a flat, horizontal surface, which of the following will be equal?

• weight, mass, gravitational force
• normal force, weight, gravitational     force
• mass, normal force, frictional force
• net force, gravitational force,   frictional force

For objects moving vertically at constant velocity,

• the net force is equal to the      frictional force.
• the net force is greater than the    applied force.
• the gravitational force is equal to    the frictional force.
• the applied force is equal to the      weight of the object.

Tags

NGSS.MS-PS2-2

The diagram shows a box being pulled up the ramp. Which letter represents normal force?

• A

• B

• C

• D

Tags

NGSS.HS-PS2-1