7. A projectile is fired as shown i the figure below. Find its velocity when it is at two-third (2/3) of its maximum height and heading down towards the ground. v = 30 m/s e = 40°

4. A projectile is launched from 20.0 m above ground level with an initial velocity of 35.0 m/s at 60.0° with respect to the horizontal. a) What is the object's maximum displacement in the y-direction? 35 m/s

9. A fireworks shell is launched in a level field at an angle of 70 degrees with an initial speed of 100 m/s. a. If the shell behaves as a projectile, determine its horizontal range (x displacement). [Get components and determine Ax.]

Draw 2. A projectile is launched as shown from A. What is the range R that it will travel? 225 m/s 50 A 19 R rch 16 近

7. A projectile is fired horizontally at 9 m/s from a 7.2 m high wall. a. Find its speed when it reaches the ground. b. At what angle does it hit the ground?

In the above drawing, a football is kicked from the ground with a velocity v at an angle θ andfollows the path indicated through the air. 2. The horizontal component of the velocity at the moment the ball is kicked isa. vb. v cos θc. v sin θd. zeroe. 9.8

6 m/s 39° 1 m 1. A cat jumps off a dresser that is 1 m high. The initial velocity of the cat is 6 m/s at an angle of 39° above the horizontal. How far out from the edge of the dresser does the cat strike the floor? Show your calculations. Refer help sheets next page.

6. A projectile is launched at ground level with an initial speed of 46.0 m/s at an angle of 35.0° above the horizontal. It strikes a target above the ground 2.70 seconds later. What are the x and y distances from where the projectile was launched to where it lands? 7. A ball is thrown horizontally from the top of a 54.0-m building and lands 117.3 m from the base of the building. Ignore air resistance. (Assume the ball is thrown in the +x direction and upward to be in the +y direction.) (a) How long (in s) is the ball in the air?  s (b) What must have been the initial horizontal component of the velocity (in m/s)? (Indicate the direction with the sign of your answer.)  m/s (c) What is the vertical component of the velocity (in m/s) just before the ball hits the ground? (Indicate the direction with the sign of your answer.)  m/s (d) What is the velocity (in m/s) (including both the horizontal and vertical components) of the ball just before it hits the ground? magnitude…

Spitting cobras can defend themselves by squeezing muscles around their venom glands to squirt venom at an attacker. Suppose a spitting cobra rears up to a height of 0.520 m above the ground and launches venom at 4.00 m/s, directed 41.0° above the horizon. Neglecting air resistance, find the horizontal distance (in m) traveled by the venom before it hits the ground. HINT m Need Help? Read it Watch It

1. A water pistol aimed horizontally projects a stream of water with an initial speed of 5.00 m/s2. a. How far does the water drop in moving 1.00 m horizontally? b. How far does it travel before dropping a vertical distance of 1.00 cm?