Physical Science Exam #2

Which of the following are true phrases of Newton's Laws of Motion?

• An object at rest tends to stay rest unless acted upon by an unbalanced force

• An object tends to stay in motion unless acted upon by an unbalanced force

• When an object has greater mass, it has greater resistance to a change in motion, and has less available acceleration

• Every action has an equal, opposite, and simultaneous reaction

• Forces can neither be created nor destroyed

Which one of Newton's Laws of Motion explain why this can is at rest on the table?

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Newton's 4th Law

Which one of Newton's Laws of Motion explain the motion of the boat after the man steps off of it?

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Newton's 4th Law

Which one of Newton's Laws explains why the larger object would resist a change in motion more so than the smaller object?

• Newton's Second Law of Motion
• Newton's Third Law of Motion
• Newton's First Law of Motion
• Newton's Law Fourth Law of Motion

In this force diagram, are all of the force pairs balanced? if so, then choose the balanced option. If they are not balanced, choose one of the unbalanced options that corresponds to what is taking place in the figure.

• Yes, all force pairs are balanced

• No, the vertical force pairs are not balanced.

• No, the horizontal force pairs are not balanced.

• No, none of the force pairs are balanced.

Is the box going to move based on the force pairs? If so, which direction is the box moving and how much force is causing it to move?

• The box is not moving.
• The box is moving to the right with a force of 17 N.

• The box is moving to the left with a force of 17 N.

• The box is moving to the right with a force of 20 N.

How much Force (in Newtons) is being applied to a baseball is it has a mass 0.15 kilograms and an acceleration 120 m/s² ?

• 1.5 N

• 120 N

• 0.12 N

• 18 N

How much acceleration does a rabbit have if it is experiencing 20 Newtons of Force and has a mass of 2.8 kilograms?

• 0.71 m/s²

• 14 m/s²

• 2.8 m/s²

• 7.14 m/s²

What would be the mass of a wrecking ball if it has an acceleration of 2.7 m/s² and 750 Newtons of Force applied to it?

• 375.2 kg

• 277.8 kg

• 500.4 kg

• 625.6 kg

Which of the following is the formula for momentum?

• Force x Acceleration

• Distance / Time

• Mass x Velocity

• Mass x Acceleration