Physics

Newton's 2nd Law of Motion is about Force. The formula is F=MA what does this stand for?

• F(force)=

  M(movement) X A(Acceleration)

• F(force)=

  M(mass) X A(Acceleration)

• F(friction)= M(magnetism) X A(Acceleration)

If you're riding your bike and stop pedaling, why do you slow down?

• gravity slows you down

• The force of friction is acting on your bike

• momentum slows it down

• Just because.

Newton's 1st Law of Motion?

• says that acceleration (gaining speed) happens when a force acts on a mass (object)

• An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force

• states that for every action (force) in nature there is an equal and opposite reaction.

What is Force?

• When you push it doesn’t move

• A push or pull

• change in velocity

What is a Hypothesis

• Observation

• Research

• An educated guess

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Newton's 1st Law of Motion?

• says that acceleration (gaining speed) happens when a force acts on a mass (object)

• An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

What is friction?

• strength or energy as an attribute of physical action or movement

• is a force that resists the motion of one object against another.

What is instantaneous speed

• The speed at one particular point in the journey

• The overall speed of the journey

• The initial velocity

what is acceleration?

• The overall speed of an object

• The change in velocity per unit time

• A distance traveled over a period of time

A lorry accelerates at 5m/s2 to 65m/s if it takes 10 seconds, calculate the starting speed of the lorry.

What is the proper equation to use for this question?

• v=u-u/t

• v=d/t