A balloon rising vertically with a velocity of 5 m/s releases an object from a height of 100 m,   A. How many seconds after its release will the object reach the ground?   B. At what velocity will the object reach the ground?

A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 18.0 below the horizontal. The negligent driver leaves the car in neutral, and unfortunately the emergency brakes are defective. The car rolls from rest down the incline for a distance of 30.0 m to the edge of the cliff, which is 45.0 m above the ocean. Ignore air and road resistance forces.A. . What is the velocity when the car hits the water?

A swimmer bounces almost straight up from a diving board and falls vertically feet first into a pool. She starts with a speed of 3.4 m/s and her takeoff point is 1.9 m above the pool's surface. a. For how long are her feet in the air , in seconds? here is my ans. 0.34? b. What is the height above the board, in meters, of her highest point? c. What is her velocity , in meters per second, when her feet hit the water? assume the vertical component is positive upwards.

1. A ball is thrown upward from the top of a 50 meter high building with an initial speed of 25 m/s.a. How much time does it take to reach the ground?b. What velocity does it have when it reaches the ground?

A rocket is launched from a height of 3 m with an initial velocity of 15 m/s. At what time will the rocket be 13 m from the ground?

5. A small rock is thrown vertically upward with a speed of 12.0 from the edge of the roof of a 25.0 m tall building. The rock doesn't hit the building on its way back down and lands on the street below. Ignore air resistance. a. What is the speed of the rock just before it hits the street? b. How much time elapses from when the rock is thrown until it hits the street? c. Find the maximum height above the ground that the rock reaches. d. At what time after being released has the rock fallen 8.0 m below the roof edge? e. What is the ball's acceleration when it is 8.0 m below the roof edge? vy=25.18 m/s a. b. t = 3.79 s c. y 32.35 m d. t = 2.99 s e. ay = -9.8 m/s²

A car is traveling at a steady 85 km/h in a 50 km/h zone. A police motorcycle takes off at the instant the car passes it, accelerating at a steady 8.4 m/s2 . a. How much time elapses before the motorcycle is moving as fast as the car? b.

The position (in meters) of an object is given as a function of time by the equation:                            x(t) = 2t^3 - 3t^2 +t-6                                         a.What is the initial position of the object (that is, at t=0) and What is the position after 3 seconds?   b.What is the average velocity of this object over the first 3 seconds? and   Write an equation for the instantaneous velocity of this object          c.What is the initial velocity of this object (that is, at t=0) and What is the velocity of this object at 3 seconds? Also find the average acceleration for this object over the first three seconds? Please answer it completetely.

A stone is thrown straight up from the edge of a roof, 650 feet above the ground, at a speed of 16 feet per second.A. Remembering that the acceleration due to gravity is −32ft/sec^2, how high is the stone 5 seconds later?B. At what time does the stone hit the ground?C. What is the velocity of the stone when it hits the ground?

A stone is dropped at height 500 m from the ground. After 2 seconds, another stone isthrown upward with an initial velocity of 70 m/s. Assume acceleration due to gravity is9.81 m/s2.a. What is the time when they will meet?b. What is the height h, from the ground, where they will meet?