Exploring Newton's Laws of Motion

What does Newton's First Law of Motion state about a body at rest or in uniform motion?

• It will remain at rest or in uniform motion unless acted upon by a resultant force.

• It will eventually come to a stop due to friction.

• It will accelerate indefinitely.

• It will change its state of motion on its own.

According to Newton's Second Law, what is the relationship between force and momentum?

• Force is equal to the change in momentum.

• Force is proportional to the rate of change of momentum.

• Force is inversely proportional to the change in momentum.

• Force is independent of momentum.

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How is momentum defined?

• The product of mass and acceleration.

• The product of mass and velocity.

• The product of force and time.

• The product of velocity and time.

In the given example, what is the initial momentum of the lorry?

• 30,000 kilogram meters per second

• 200,000 kilogram meters per second

• 50,000 kilogram meters per second

• 100,000 kilogram meters per second

What does the negative sign in the calculated braking force indicate?

• The force is acting in the direction of motion.

• The force is acting in the opposite direction to the motion.

• The force is negligible.

• The force is constant.

What does Newton's Third Law of Motion state about forces between two bodies?

• The forces are unequal in magnitude and in the same direction.

• The forces are unequal in magnitude and opposite in direction.

• The forces are equal in magnitude and in the same direction.

• The forces are equal in magnitude and opposite in direction.

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Why does your hand hurt when you punch a wall, according to Newton's Third Law?

• The wall exerts no force.

• Your hand is not strong enough.

• The wall absorbs all the force.

• The wall exerts a force equal in magnitude but opposite in direction to the force exerted by your hand.

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What is impulse defined as?

• Mass times velocity.

• Force times the time for which the force acts.

• Force times the distance over which the force acts.

• Acceleration times time.

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How can impulse be calculated using a force-time graph?

• By finding the maximum value of the graph.

• By finding the area under the graph.

• By finding the minimum value of the graph.

• By finding the slope of the graph.

If a ball of mass 9.6 kg is kicked from rest with an impulse of 10 Newton seconds, what is its speed when it leaves the foot?

• 9.6 meters per second

• 1.04 meters per second

• 10 meters per second

• 16.7 meters per second

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