Forces and Motion

What is the force that opposes the motion of objects sliding against each other?

• Attraction

• Friction

• Slipperiness

• Resistance

Which force causes objects to fall towards the Earth?

• wind

• magnetism

• friction

• gravity

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

What is the rate of change of velocity of an object over time?

• Deceleration

• Inertia

• Acceleration

• Speed

What is the speed of an object in a particular direction?

• Speed

• Acceleration

• Velocity

• Distance

Tags

NGSS.MS-PS3-1

What is the acceleration of an object if its velocity is increasing?

• Negative

• Zero

• Positive

• Decreasing

Tags

NGSS.HS-PS2-1

What is the acceleration of an object if its velocity is decreasing?

• Positive acceleration

• Constant acceleration

• Negative acceleration

• Zero acceleration

What is the acceleration of an object if its velocity is constant?

• 0 m/s^2

• 2 m/s^2

• 5 m/s^2

• 9.8 m/s^2

What is the force that keeps objects in circular motion?

• Tension force

• Centrifugal force

• Centripetal force

• Gravitational force

What is the acceleration due to gravity on Earth?

• 9.81 m/s^2

• 6.5 m/s^2

• 8.7 m/s^2

• 10.2 m/s^2

What is the formula to calculate acceleration?

• acceleration = (final velocity - initial velocity) / time

• acceleration = (final velocity * initial velocity) / time

• acceleration = (final velocity + initial velocity) / time

• acceleration = (final velocity - initial velocity) * time