A parachutist is in free fall at a rate of 200 km/h when he opens his parachute at an altitude of 600 m. Following a rapid and con- stant deceleration, he then descends at a constant rate of 50 km/h from 586 m to 30 m, where he maneuvers the parachute into the wind to further slow his descent. Knowing that the parachutist lands with a negligible downward velocity, determine (a) the time required for the parachutist to land after opening his parachute, (b) the initial deceleration.

A marble is launched from the edge of a table at a angle of 45 ° up from horizontal and goes through the air until it hits the floor.  True or False?  For such a marble, the magnitude of the acceleration decreases and then increases while it is airborne.

A ball is throw hoard from the ground with  initial velocity vi= 14 m/s and reaches height of h above the ground before falling back down. Take the upwards direction to be positive. Neglect air resistance. (F) Calculate the value of delta t in seconds. (G) What is the total displacement, in meters, of the ball going through its entire motion: traveling from the ground to the top then falling back to the ground? (H) Enter an expression for the total time of flight of the ball: the time from when it is launches to when it lands ba on the ground. (I) Express this time in terms of vi and a. Calculate the value of delta t tot in seconds. (J) Enter an expression for delta t tot in terms of the variable delta t tot in terms of the variable delta t, the time of ascent from the ground to the top of the trajectory. (K)  Express the velocity of the ball right before it hits the ground, vf, in terms of vi, delta t and a. (L) Express vf in terms of vi.

A criminal is escaping across a rooftop and runs off the roof horizontally at a speed of 5.1m/s, hoping to land on the roof of an adjacent building. Air resistance is negligible. The e horizontal distance between the two buildings is D, and the roof of the adjacent building is 2.0m below the jumping-off point. Find the maximum value for D.

PLEASE ANSWER ASAP: A 4.61m-tall truck is moving an initial speed of 15.32m/s due West with an acceleration of 0.22 m/s^2 with a 1.66m- person standing at the top of a truck. After 17.93s, the man throws a ball to the ground at shoulder level perpendicular to the left of the truck's direction with an initial velocity of 23.53 m/s at an angle of 42.80° above the horizontal. Assuming shoulder level is 80% of the total height and negligible air resistance, determine the magnitude and direction of the displacement of the ball upon impact. [Use positive angle and CCW]

A home run is hit in such a way that the baseball just clears a wall 16 m high, located 122 m from home plate. The ball is hit at an angle of 37° to the horizontal, and air resistance is negligible. (Assume that the ball is hit at a height of 1.0 m above the ground.)(a) Find the initial speed of the ball.           m/s (b) Find the time it takes the ball to reach the wall.               s (c) Find the velocity components of the ball when it reaches the wall. x-component            m/sy-component             m/s Find the speed of the ball when it reaches the wall.   m/s

You throw a snowball horizontally from the roof of a building that is 83.0 m above flat ground. The initial speed of the snowball is 17.0 m/s. Assume free fall with up as positive, and use g = 9.80 m/s2. Ignore air resistance. (a) How long does the projectile remain in the air?(b) At what horizontal distance from the firing point does it strike the ground?(c) What is the vertical component of its velocity as it strikes the ground?(d) What is the direction of the ball's velocity (from the x-axis) just before it hits the ground? °