Question bank: Momentum and Impulse: Momentum

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Question 1:

Medium

A basketball with a mass of 0.6 kg is thrown with a velocity of 5 m/s towards a basket. Consider that the ball travels in a straight and horizontal path before hitting the basket. What is the momentum of the basketball before hitting the basket?

Momentum and Impulse: Momentum

Question 2:

Medium

A block of mass m is sliding on a horizontal surface with constant velocity v. What is the momentum of this block?

Momentum and Impulse: Momentum

Question 3:

Easy

A car weighing 1500 kg is stopped at a traffic light. When the light turns green, it starts moving and reaches a speed of 10 m/s after 5 seconds. Calculate the momentum of the car after the 5 seconds, using the formula Q = m * v, where Q is the momentum, m is the mass of the car, and v is the velocity of the car.

Momentum and Impulse: Momentum

Contextualized Question

Calculus Question

Question 4:

Hard

A football player, with the ball at his feet, kicks it straight, leaving it with a speed of 25 m/s. The ball, with a mass of 0.5 kg, was initially at rest. Considering that the player applied a constant force to the ball for a time interval of 0.2 s, calculate the initial and final momentum of the ball, and determine the force exerted by the player during the kick. Use Newton's 2nd Law, F=m*a, where 'F' is the force, 'm' is the mass, and 'a' is the acceleration, and the relationship between average force and impulse, J=F*t, where 'J' is the impulse and 't' is the time of force application. Consider that the ball moves in a straight line and that there was no influence of external forces, such as air resistance, during the kick.

Momentum and Impulse: Momentum

Multidisciplinary Question

Question 5:

Medium

During a soccer match, a player kicks a ball weighing 0.4 kg with a speed of 20 m/s towards the goal. Considering that momentum is the product of an object's mass and its velocity, answer: a) What is the momentum of the ball just after the kick? b) If a goalkeeper manages to stop the ball in 0.5s, what is the average force he applies to the ball to stop its movement? c) If the ball reaches the goalkeeper at a distance of 30m from the player who kicked it, what is the magnitude of the average velocity of the ball during the journey?

Momentum and Impulse: Momentum

IARA TIP

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