An athlete leaps starting at a 20-degree angle and reaches a maximum height of 0.6 m. What is his initial speed

A cannon barrel is elevated at an angle of 45°. It fires a ball with a speed of 257 m/s. (For the following questions, ignore air resistance.) (a) What height does the ball reach? .......................m(b) How long is the ball in the air? .........................s(c) What is the horizontal range of the cannon? ...........................km

A stone is thown from the top edge of a cliff with an initial speed of V0 = 15 m/s . The stone takes 3 seconds to each the bottom. What is the height of the cliff. (air resistance is negligible).

While standing at the edge of the roof of a building, a man throws a stone upward with an initial speed of 6.71 m/s. The stone subsequently falls to the ground, which is 16.7 m below the point where the stone leaves his hand. At what speed does the stone impact the ground? Ignore air resistance and use g = 9.81 m/s² for the acceleration due to gravity. impact speed: m/s How much time is the stone in the air? elapsed time: S

A ball is thrown down with an initial speed of 3.00 m/s from a height of 7.00 m above the ground. What is its speed right before it hits the ground, in m/s? Use g = 10.0 m/s2.

A small rocket is launched straight up. When at a height of 5.0km and velocity of 200.0m/s, it releases its booster and enters free fall. Neglecting air friction, what is the velocity of the rocket at a height of 6.0km on its way up? 143m/s 200m/s 244m/s 397m/s

A test rocket is fired vertically upward from a well. A catapult gives it initial speed 60 m/s at ground level. Its engines then fire and it accelerates upward at 5.0 m/s² until it reaches an altitude of 1,100 m. At that point its engines fail and the rocket goes into free-fall, with an acceleration of g=9.80 m/s². What is its velocity just before it collides with the Earth? (You will need to consider the motion while the engine is operating separately from the free-fall motion.) [Give your answer in m/s to the nearest 0.1 m/s]

A rocket is launched from the ground with the upward velocity of 140 m/s. There is no engine working on the rocket while is is flying up. What is the maximum height the rocket reaches?

Omar throws a rock down with speed 14 m/s from the top of a tower. The rock hits the ground after 6.8 s. What is the height of the tower? (air resistance is negligible)

x = xót vót tật, ở = To +ất, v = vỏ +2āA,t=i + -b+√b²-4ac 2a