CSA #2 Force and Motion (Physical Science)

Which of the following scenarios best illustrates Newton's First Law of Motion?

• A book resting on a table

• A cyclist pedaling uphill

• A ball rolling down a hill

• A plane taking off from a runway

What is the unit of measurement for force in the International System of Units (SI)?

• joule

• pascal

• newton

• watt

You and your friend are pushing a table. Your friend pushes with a force of 40 N to the left and you push with a force of 30 N to the left. What is the net force on the table?

• 70 N left

• 10 N right

• balanced

• 50 N right

The overall force acting on an object in a specific direction

• resultant force

• equilibrium force

• gravitational force

• applied force

Which of the following graphs would best represent a car accelerating uniformly?

• the graph on the left

• the graph in the middle

• the graph on the right

• none of the above

In baseball, a ground ball happens when a player hits the ball along the ground. The player on the other team must field it and throw it to a base. Imagine that there was suddenly no gravity on Earth. How would a ground ball be different?

• The ground ball would roll faster.

• The ground ball would float away.

• The ground ball would stay on the ground.

• The ground ball would roll more slowly.

A hiker climbs up a steep hill. As he ascends, he feels a force pulling him back down. What is this force that acts against his climb?

• Muscle fatigue

• Wind resistance

• Gravity

• Friction

Which of the following consists only of contact forces?

• friction, tension, normal force

• gravity, magnetic force, electrical force

• air resistance, gravity, friction

• applied force, electrical force, tension

What is required for gravitational force to act between two objects?

• Mass

• Charge

• Temperature

• Shape

Which of the following statements about gravitational force is TRUE?

• Gravitational force is independent of the distance between two objects.

• Gravitational force only acts on objects that are in direct contact.

• Gravitational force decreases as the distance between two objects increases.

• Gravitational force is stronger on objects with less mass.