5P1.4 Predict the effect (change in force or mass)

In the image, which of the person and their bikes will get down a hill faster? 

• The boy because he is younger
• The woman because she is stronger
• The boy because he has a greater mass which applies a greater force
• The woman because she has more mass and applies a greater force

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If these boys are pulling with the same amount of force.  What will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

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How will this object move?

• It won't move.

• It will move to the right.

• It will move to the left.

• It will move up and down.

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According to Newton's first law, the law of inertia, a bike in motion will...

• Remain at rest unless acted on by a balanced force
• Remain in motion unless acted on by an unbalanced force
• slow down even if no forces act on it

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According to Newton's second law, the law of acceleration, it takes more force to accelerate a bowling ball than a soccer ball since a bowling ball has:

• Less Mass
• More Mass
• More Inertia
• Less Inertia

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According to Newton's second law, the law of acceleration, if you push on a lego house and a real house with the same amount of force:

• The real house will be pushed further because it has more mass.
• The lego house will be pushed further because it has less mass.
• The lego house will be pushed further because it has more mass.
• Both houses will be pushed the same distance because mass does not effect motion.

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Four solid balls, each with a different mass, are moving at the same speed. Which ball would require the most force to stop its motion?

• ball with a mass of 5 kg

• ball with a mass of 15 kg

• ball with a mass of 2 kg

• ball with a mass of 10 kg

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Why would a boat drift when it has dropped anchor?

• The force of gravity on the anchor is stronger than the force of the current on the boat.

• The force of gravity on the anchor is weaker than the force of the current on the boat.

• The force of gravity on the anchor is stronger than the force of gravity on the boat.

• The force of gravity on the anchor is weaker than the force of gravity on the boat.

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Two girls tie a rope to a heavy rock. One girl cannot lift it by herself. Another girl puts the rope over a bar, and together they are able to lift the rock. Why does this work?

• The force of gravity on the object is greater than the force of gravity on the rope.

• The force of gravity on the rope is greater than the force of gravity on the object.

• The force of the girls pulling is greater than the force of gravity on the object.

• The force of gravity on the object is greater than the force of the girls pulling.

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Janelle is pushing a grocery cart that has a mass of 10 kg with a constant force. If the force stays the same, which statement correctly describes how the motion of the grocery cart will change as its mass changes?

• The cart will move faster if the mass is increased by 2 kg.

• The cart will move slower if the mass is decreased by 4 kg.

• The cart will move faster if the mass is increased by 10 kg.

• The cart will move slower if the mass is increased by 5 kg.

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