Newton's Laws of Motion and Economy of Movement - LCPE

A vector is a quantity that has what two properties?

• Speed and direction

• Magnitude and direction

• Magnitude and purpose

• Speed and purpose

Which of the following are examples of Vectors

• Acceleration

• Force

• Speed

• Velocity

Scalars are quantities that have magnitude, but what is not important when talking about them.

• Value

• Units

• Direction

Is the following statement describing speed or velocity. He was running 2.5m/s east.

• Speed

• Velocity

A body in motion will only change velocity when acted on by an external force. The resultant change in velocity is proportional to the force applied and acts in the same direction as the applied force. What Law is this?

• Newton's 2nd law

• Newton's 1st law

• Newton's 3rd law

• None of the above

To every action (force) there is an equal and opposite reaction (counterforce). What Law is this?

• Newton's 2nd law

• Newton's 1st law

• Newton's 3rd law

• None of the above

•It states a body(object) will remain at rest will remain at rest and a body in motion will remain in motion with a constant speed and direction, unless acted on by an external force. What Law is this?

• Newton's 2nd law

• Newton's 1st law

• Newton's 3rd law

• None of the above

An object will move faster(acceleration) in a certain direction the harder(force) you hit it with in that direction. . What Law is this?

• Newton's 2nd law

• Newton's 1st law

• Newton's 3rd law

• None of the above

Which of the following describes the resistance to motion? Constant vertical downward force?

• Drag

• Gravity

• Friction

• Angular momentum

Which of the following describes the resistance to motion? This gripping force can be both a beneficial resistance that allows for increased power output ?

• Drag

• Gravity

• Friction

• Angular momentum