Force and Motion

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

• 5120 N

• 950 N

• 1520 N

• 4050 N

Who wins the tug of war with what resultant 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

Two forces act on an object to the right at the same time. What is the resultant force?

• 9 N to the right

• 9 N to the left

• 3 N to the left

• 18 N to the left

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

• he has a resultant force acting on him.

• the ground reaction 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.

According to Newton's First Law (balanced forces), an object at rest will tend to do which of the following?

• stay at rest

• stay in motion

• speed up

• change in direction

According to Newton's First Law (balanced forces), an object in motion will tend to:

• stay at rest

• stay in motion

• change in direction

• slow down

Which of the following could cause an acceleration?

• A balance between two forces

• A balance between three forces

• Two unbalanced forces

• Zero forces

Multiplying the mass and acceleration of an object would give you:

• the force of gravity

• the force of friction

• the velocity

• the resultant force

An object has a mass of 10 kg. What is its weight?

• 0.10 kg

• 0.10 N

• 100 kg

• 100 N

An unbalanced force causes:

• change in mass
• acceleration
• balanced forces
• change in time

Tags

NGSS.MS-PS2-2