Unit 2 Test Study Guide Review

Velocity is a combination of what 2 things?

• Speed and direction

• Mass and acceleration

• Force and time

• Energy and power

How does an object’s velocity get stopped?

• By applying a force in the opposite direction

• By increasing its mass

• By reducing friction

• By increasing its speed

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What is the difference between speed and velocity?

• Speed is a scalar quantity, while velocity is a vector quantity.

• Speed and velocity are both vector quantities.

• Speed is measured in meters per second, while velocity is measured in kilometers per hour.

• Speed and velocity are the same and can be used interchangeably.

Name the contact forces we talked about.

• Friction and tension

• Gravity and magnetism

• Electric force and nuclear force

• Buoyant force and air resistance

Name the non-contact forces we talked about.

• Gravitational force

• Frictional force

• Magnetic force

• Tension force

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What is the rate of change of velocity of an object known as?

• Acceleration

• Speed

• Momentum

• Force

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Which force results from charged particles?

• Gravitational force

• Electromagnetic force

• Nuclear force

• Frictional force

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What is defined as “a push or pull”?

• Force

• Energy

• Mass

• Velocity

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In physics, how do you get an object to move?

• Apply a force

• Increase its temperature

• Change its color

• Reduce its mass

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What is inertia?

• The tendency of an object to resist a change in motion

• The force that causes objects to move

• The energy required to start an object moving

• The speed at which an object moves

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