1) Which of the following best describes the horizontal motion of a projectile? a) The horizontal motion is constant. b) The horizontal motion is accelerated. 2) A ball is thrown horizontally from a cliff. Which of the following statements is true regarding its motion? a) The ball will fall straight down. b) The ball will continue to move horizontally at a constant speed c) The ball will curve downward due to air resistance. d) The ball will fall downward while moving horizontally at a constant speed. 3) A ball is launched at an angle of 45 degrees with respect to the horizontal. Which of the following will have the greatest impact on the maximum height reached by the projectile? a) The initial velocity of the ball. b) The angle at which the ball is launched. 4) When a projectile is launched at an angle other than 90 degrees, which of the following components of its initial velocity affects the range the most? a) The vertical component. b) The horizontal component. 5) What happens to the range of a projectile when the angle of release is increased beyond 45 degrees? a) The range increases. b) The range decreases. c) The range remains the same. 6) Two projectiles are launched with the same initial velocity but different angles of release. Projectile A has an angle of 30 degrees, while Projectile B has an angle of 60 degrees. Which of the following statements is true? a) Projectile A will have a greater range than Projectile B. b) Projectile B will have a greater range than Projectile A. 7) What happens to the height of a projectile when the angle of release is increased from 30 degrees to 60 degrees? a) The height increases. b) The height decreases. 8) Which of the following quantities is a measure of an object's momentum? a) speed b) acceleration c) force d) mass 9) A car with a mass of 1200 kg collides with a stationary car of mass 1000 kg. If the initial velocity of the moving car is 20 m/s and it comes to a stop after the collision, what is the change in momentum of the car? a) 0 kg·m/s b) 2000 kg·m/s 10) Which of the following statements best describes the law of conservation of momentum? a) The total momentum of a system is conserved before and after a collision. b) The total momentum of a system is always increasing.

Part 3 - Science 4th PT

Autor
Postavi

Top-lista

Vizualni stil

Postavke

Promijeni predložak

Vrati automatski spremljeno: ?