Flying a kite is an example of Newton's first law of motion. The kite is in stable flight when forces are balanced. What could cause a change to the kite's flight?

• Tension on the line increases, causing forces to be unbalanced.

• Wind increases, causing forces to be balanced.

• Air temperature becomes cooler, causing forces to be balanced.

• Wind increases, causing forces to become unbalanced.

• Tension on the line increases, causing forces to be balanced.

The objective of bumper cars is to hit as many cars as possible while trying not to get hit yourself. According to Newton's third law of motion, if you are in a bumper car and you hit someone, that person will feel a force from you, and you will also feel a force of the same magnitude from them. What will happen to Car A when Car B hits it?

• Car A will not move after being hit.

• Both Car A and Car B will not move after being hit.

• Both cars will push away from each other after being hit.

• Both cars will stop and turn in the opposite direction.

The table below lists Newton's three laws of motion. Though all three of Newton's laws happen simultaneously, identify the activities that best illustrate each of Newton's three laws of motion described.

Groups:

(a) Law of Inertia

,

(b) Law of Force and Acceleration

,

(c) Law of Action and Reaction

• While sitting down on a chair, the chair pushes back up on you with the same amount of force.

• An 18-wheeler takes more time to accelerate on the highway than a motorcycle.

• If the baseball player hits the ball harder, the ball will accelerate more quickly.

• Swimmer uses their arms to push water backward. Water reacts by pushing the swimmer forward.

• In a car, you tend to move forward when brakes are applied.

• Kicking a soccer ball from a resting point in the grass toward a net.

In karate class, students are to break sets of bricks. They accomplish this by moving their hands over the bricks quickly. This helps them to gain acceleration and force, which should provide enough force to break the bricks. This is an example of which of Newton's laws?

• Newton's first law of motion - the law of inertia

• Newton's second law of motion - the law of force and acceleration

• Newton's third law of motion - the law of action and reaction

• This is not an example of any of Newton's Laws of Motion

Match the following.

• Inertia

• The rate of change of velocity which includes speeding up, slowing down, or changing direction.

• Force

• An object's tendency to resist a change in motion

• Mass

• Amount of matter in an object.

• Acceleration

• A push or pull on an object that may change the motion of the object

Explain why it requires more force to push an adult on a swing than a child on a swing.

Which statement best describes the application of Newton's first law during a basketball game when Derrick S. is dribbling the ball down the court?

• It applies only when the ball is shot toward the basket.

• It is not applicable as the ball is constantly being pushed by external forces.

• It explains the ball's motion, as it remains in motion unless acted upon by an external force.

• It is demonstrated only when the ball interacts with the hoop.

What is the formula for force?

• F=M/A
• F=A/M
• F=M*A
• F=M*F

Tags

NGSS.MS-PS2-2

A 20 kg bike accelerates at 10 m/s².  what was the force?

• 25 Newtons
• 20 Newtons
• 200 Newtons
• 10 Newtons

Tags

NGSS.MS-PS2-2

Jeseakah kicks a soccer ball toward the goal. Bella, the goalie reaches out and blocks the ball with her hand. Her hand applies a 20-Newton force to the ball.

Which statement correctly describes how Newton's three laws of motion act simultaneously?

• The first law is demonstrated with the amount of force applied to the ball. The second law occurs when the ball is kicked into motion, and the third law occurs when the goalie catches the ball and makes it stop.

• The first law occurs when the ball is kicked into motion. The second law is demonstrated with the amount of force applied to the ball, and the third law occurs when Bella catches the ball and makes it stop.

• 1. The first law occurs when Bella catches the ball and makes it stop. The second law is demonstrated with the amount of force applied to the ball, and the third law occurs when the ball is kicked into motion. 

• 1. The first law occurs when Bella catches the ball and makes it stop. The second law occurs when the ball is kicked into motion, and the third law is demonstrated with the amount of force applied to the ball.