Understanding Impulse and Motion

What is the relationship between impulse and momentum?

• Momentum is independent of impulse.

• Impulse is the same as momentum.

• Impulse decreases momentum.

• Impulse is equal to the change in momentum.

How does the second law of motion relate to impulse?

• Impulse is the force applied over time, unrelated to momentum.

• Impulse is the change in momentum, which is directly related to the second law of motion.

• The second law of motion states that impulse is constant regardless of mass.

• Impulse is only relevant in elastic collisions, not in motion.

Calculate the impulse experienced by an object with a mass of 5 kg that changes its velocity from 2 m/s to 8 m/s.

• 15 kg·m/s

• 30 kg·m/s

• 25 kg·m/s

• 20 kg·m/s

If a net force of 10 N is applied to a 2 kg object, what is its acceleration?

• 5 m/s²

• 20 m/s²

• 10 m/s²

• 2 m/s²

Provide a real-world example of how impulse is applied in sports.

• A soccer player kicking the ball towards the goal.

• A swimmer diving into the water.

• A tennis player serving the ball.

• A basketball player jumping to shoot the ball.

Explain how the second law of motion can be used to predict the motion of a car accelerating from rest.

• The second law of motion only applies to objects in free fall.

• The second law of motion predicts that a car will remain stationary unless acted upon by an external force.

• The second law of motion states that a car cannot accelerate from rest.

• The second law of motion allows us to predict the car's acceleration and subsequent velocity over time as it accelerates from rest.

What is the formula for calculating impulse?

• Impulse = Mass × Acceleration

• Impulse = Work × Distance

• Impulse = Velocity × Time

• Impulse = Force × Time or Impulse = Change in Momentum

How does increasing the time of impact affect the impulse experienced by an object?

• Increasing the time of impact decreases the impulse experienced by an object.

• Increasing the time of impact increases the impulse experienced by an object.

• The time of impact has no effect on the impulse experienced by an object.

• Impulse is only affected by the force applied, not the time of impact.

Describe a scenario where net force and acceleration are not in the same direction.

• A car braking while moving forward.

• A rocket launching into space.

• A ball rolling down a hill.

• A bicycle coasting downhill without brakes.

What happens to the momentum of an object when a net external force acts on it?

• The momentum is transferred to another object.

• The object gains mass.

• The momentum of the object changes.

• The momentum remains constant.