Momentum and Impulse Flashcards
Which has more momentum, a large truck moving at 30 km/h or a small truck moving at 30 km/h?
The large truck
Which has more momentum, a sports car moving at 60 km/h or the same sports car moving at 100 km/h?
100 km/h
The product of force multiplied by the time interval during which the force acts is called
impulse
The reason padded dashboards are used in cars is that they
increase the time of impact in a collision
The momentum change in an object is equal to the
impulse acting on it
In order to increase the final momentum on a golf ball, we could
both of these (increase force acting on it and increase time of contact with the ball)
The above picture shows that a truck loaded down with boxes needs more distance to stop. Considering , which of the following statements are true
every one except truck with more mass has greater velocity
Which of the following quantities is the same for both gliders after the explosion?
Momentum
A billiard ball hits the edge of another billiard ball that is initially at rest. The second ball moves off at an angle. Which of the following is true?
The momentum lost by the first ball is gained by the second ball.
A rifle recoils from firing a bullet. The velocity of the rifle’s recoil is small because the
rifle has lots more mass than the bullet
Which of the following expresses the law of conservation of momentum?
The total momentum of an isolated system remains constant.
A tennis ball is dropped from 1.0 m, bounces off the ground, and rises to 0.85 m. What kind of collision occurred between the ball and the ground?
elastic collision
When two objects interact in an isolated system,
the total momentum is always conserved.
A cannonball is fired. Compared to the impulse on the cannonball, the impulse on the cannon is
the same as the ball
separate after collison
elastic
