What is correct about the two-dimensional free fall of a ball tossed up at some angle? a. When the projectile comes back to its initial height, its velocity is equal to the initial velocity. b.The vertical acceleration is negative because gravity acts in the downward direction. c. The vertical acceleration switches sign between the upward and downward sections of the free fall. d. The horizontal velocity of the projectile remains constant.

What is correct about the two-dimensional free fall of a ball tossed up at some angle? a. When the projectile comes back to its initial height, its velocity is equal to the initial velocity. b.The vertical acceleration is negative because gravity acts in the downward direction. c. The vertical acceleration switches sign between the upward and downward sections of the free fall. d. The horizontal velocity of the projectile remains constant.

Similar questions

When there is air resistance present how to the velocity and acceleration vectors behave? a.The acceleration and velocity vectors are both constant magnitude but continually change direction. b.The acceleration vector is constant and points straight down. The velocity vector is at a tangent to the trajectory c.The acceleration vector is perpendicular to the trajectory and the velocity vector is at a tangent to it. d.The acceleration changes throughout the flight with its x-component opposite the direction of motion. The velocity vector is at a tangent to the trajectory
A ball is thrown from a high window. The arc path that it takes is a result of the combination of its horizontal and vertical motions. Which statement describes the acceleration of the ball? O The ball accelerates horizontally away from the building. The ball accelerates upward away from the ground. The ball does not accelerate. The ball accelerates vertically downward toward the ground.
One of the three Claires in 3rd Hour decides to test the idea of "do cats always land on their feet?" To test this theory, Claire (I'll let you decide which one) drops a kitten from a height of 1.8 m.a) Determine the time it takes for the kitten to reach the ground b) Determine the speed (magnitude of velocity) the kitten strikes the ground
If you throw a ball with an initial horizontal velocity of 20 m/s and an initial vertical velocity of 40 m/s. a. What will be the vertical displacement after 3 seconds? b. What will be the horizontal displacement after 3 seconds? c. What will be the vertical velocity after 3 seconds? d. What will be the horizontal velocity after 3 seconds?
student throws a heavy red ball horizontally from a balcony of a tall building with aninitial speed v0. At the same time, a second student throws a lighter blue ball horizontally fromthe same balcony with an initial speed v0 /2. Ignoring air resistance, which of the followingstatements must be true?a. The red ball hits the ground with the greater speed.b. Both balls hit the ground with the same vertical velocity component.c. Both balls hit the ground with the same angle of impactd. The balls reach the ground at the same instant. More than one of the statements can be true.
A ball of mass 0.15 kg is attached to the end of 1.1 m long cord. The ball is swung in a vertical circle. Determine the minimum speed (in m/s) of the ball at the top of the motion so that the ball continues moving in a circle. a. 2.1 b. 4.5 c. 3.3 d. 1.7
1. In a practice session, Iris hits a ball horizontally with a speed of 36 m/s from a height of 3.1 m. The ball travels until it hits the ground. a. Determine the time the ball is in the air. b. Determine the horizontal distance traveled by the ball. c. Calculate the ball’s velocity as it hits the ground.
8. The hole on a level, elevated golf green is a horizontal distance of 145 m from the tee and at an elevation of 12.3 m above the tee. A golfer hits a ball at an angle of 8.7° above the horizontal and makes a hole-in-one! What was the initial speed of the ball? m/s 60 ssf60 * ssf60 ssfondle ssf60 sste ƒ60 ssf60*** 09Jss
A search and rescue helicopter travels at constant speed in a horizontal plane. The figure below shows a portion of the path traveled by the helicopter, as viewed looking down from above. The helicopter's path includes three straight portions between points "1" and "2", points "4" and "5", and points "7" and "8", each of which has a length of 4000 m, as shown in the figure. It takes the helicopter 2000 seconds to travel along each of these straight portions of its path. The semi-circular portions of the path (also shown in the figure) have the same radius R=500m. +y YNorth) 8. 4 4000 m A semi-circle is one half of a circle. East 6.
Part A 1. A plane is heading due cast. Will its ground speed be greater than or less than its airspeed, and will its flight path be north or south of east when the wind is from a. N b. S 80° W c. S 30° E d. N 80° E
Q1-A 2.0 meter tall basketball player is standing on the floor a distance from the basket. He shoots the ball at an angle of 23 degrees above the horizontal with a speed of 9.6 m/s and makes the shot. If the ball goes in the hoop at 5 seconds, what is the height of the hoop?
Which of the following descriptions corresponds to a ball tossed vertically upward? Air resistance can be neglected. a. The velocity decreases linearly from v_0 to v_f, with v_0>0 and v_f<0. b. The velocity increases linearly from zero to v_f. c. The position first increases linearly and then decreases linearly as a function of time. d. The acceleration decreases linearly from g to zero.