Exploring Force and Motion Concepts

What is the net force on an object?

• The force of air resistance acting on it

• The force of gravity acting on it

• The force of friction acting on it

• The combination of all forces acting on it

In which unit is force measured?

• Joules

• Watts

• Pascals

• Newtons

What is the net force when forces are balanced?

• Less than zero

• Equal to the force of gravity

• Greater than zero

• Equal to zero

What happens to an object when the forces acting on it are balanced?

• It accelerates

• It decelerates

• It remains at rest or moves with constant velocity

• It changes direction

How do you calculate the net force when two forces act in the same direction?

• Divide the larger force by the smaller force

• Subtract the smaller force from the larger force

• Add the two forces together

• Multiply the two forces

If you pull a box with 30 Newtons and your brother pushes it with 20 Newtons in the same direction, what is the net force?

• 30 Newtons

• 10 Newtons

• 20 Newtons

• 50 Newtons

How do you calculate the net force when two forces act in opposite directions?

• Add the two forces together

• Multiply the two forces

• Subtract the smaller force from the larger force

• Divide the larger force by the smaller force

If you pull a remote with 10 Newtons and your brother pulls it with 8 Newtons in the opposite direction, what is the net force?

• 8 Newtons

• 18 Newtons

• 2 Newtons

• 10 Newtons

What happens to an object when the net force acting on it is greater than zero?

• It remains at rest

• It decelerates

• It moves with constant velocity

• It accelerates

If a car is rolling at 8 miles per hour to the north and is pushed at 10 miles per hour in the same direction, what is the resulting speed?

• 2 miles per hour

• 10 miles per hour

• 8 miles per hour

• 18 miles per hour