Laws of motion

In which direction and with how much force will an object move if you push to the left with 15N of force and your friend pushes to the right with 5N of force?

• up with 10N of force

• down with 5N of force

• left with 10N of force

• right with 10N of force

What is a force?

• A push or a pull

• The constant motion of an object

• The acceleration of an object

• The mass of an object

Which of these is evidence that an unbalanced force is acting on an object?

• The mass of the object is changing

• The object continues moving in a straight line

• The object remains at rest

• The motion of the object is changing

Newton's First Law States........

• Objects at rest tend to stay at rest unless acted on by an outside force.

• Objects accelerate often and it is difficult to know when or how they will accelerate.

• Objects in motion tend to stay in motion unless acted on by an outside force.

• Both A & C

What is inertia?

• An object that is accelerating

• Gravitational force

• An objects tendency to stay at rest or in motion

• An unbalanced force

Inertia depends on __________.

• Weight

• Velocity

• Mass

• Acceleration

Newton's second law states.....

• If there is more mass then there is more acceleration

• An object at rest wants to be in motion

• Force = Mass x Acceleration

• The force exerted on an object is not related to mass or acceleration

What formula is used to calculate force?

• Acceleration = Force x Mass

• Force = Mass x Acceleration

• Work = Force x Distance

• Mass = Force + Acceleration

An object with a mass of 100 kg is observed to accelerate at the rate of 5 m/s2. Calculate the force required to produce this acceleration.

• 20N

• 500 M/S

• 500 Kg

• 500N

A force of 40 N acts upon a 2 kg block. Calculate the acceleration of the object.

• 20 m/s²

• 20 m/s

• 80 m/s²

• 80 m/s