Force and Motion

A student pushes against a wall with 20 N of force and the wall does not move. In this situation, the wall exerts --

• 0 N of force

• less than 20 N of force

• 20 N of force

• more than 20 N of force

Which law of motion predicts that a moving hockey puck will continue to move in the same direction at the same speed unless acted upon by another force?

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

• Newton's Law of Universal Gravitation

Which law explains the relationship among mass, force and acceleration?

• Universal Law of Gavitation

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

The force of an object, with a certain mass accelerating at a certain rate, can be determined by using the equation below.

force = mass x acceleration

Which object would have the greatest force?

• A 5 kg object accelerating at 10 m/s

• A 5 kg object accelerating at 20 m/s

• a 20 kg object accelerating at 4 m/s

• a 20 kg object accelerating at 3 m/s

Which of these would be different for an object if measured on the Earth and on the Moon?

• Mass

• Weight

• Volume

• Density

The diagram below show the forces acting on a soccer ball.

In which of the diagrams will the ball remain motionless?

• W

• X

• Y

• Z

Which of the following situations is an example of Newton's third law of motion?

• A boy jumping on a trampoline

• A boy falling forward when a bus stops

• A chair sitting on the floor

• An apple falling from a tree

In a head-on collision, a person who is not wearing a seat belt continues to move forward at the original speed of the car because of -

• weight

• mass

• gravity

• inertia

6.8C- An airplane leaves New York to fly to Boston. It travels 1,000 km in 2 hours. What is the average speed of the airplane?

• 500 km

• 1000 hours

• 500 km/hour

• 5000 hours/km

6.8CD- Joanna’s family drove 360 km on a trip. The graph below represents their motion.

What was the average speed during the trip?

• 45 km/h

• 60 km/h

• 120 km/h

• 180 km/h