You throw a baseball directly upward at time t = 0 at an initial speed of 14.1 m/s. What is the maximum height the ball reaches above where it leaves your hand? Ignore air resistance and take g = 9.80 m/s². maximum height: At what times does the ball pass through half the maximum height? earlier time at half maximum height: later time at half maximum height: m

An object weighing 4 lbs is fired upwards with an initial speed of 4 ft/s. Assume that the magnitude of air resistance is proportional to the speed of the object with k=1.25 lbs per ft/s. Set up and solve an initial value problem to find the velocity of the object as a function of time

Here we go again this time, d = 3.62 m. Suppose the block starts on the track at x = 0. What minimum initial velocity (moving to the right) must the block have such that it will leave the track at x = 0 and go into freefall?   A 8.43 m/s   B 5.96 m/s   C 5.76 m/s   D 3.52 m/s

A 0.54-kg ball is thrown vertically upward with an initial speed of 14.0 m/s. What is the speed of the ball when it hastravelled three-quarters of the distance to its maximum height?

A 15 kg ball is thrown straight upward with a speed of 22 m/s. What is the maximum height the ball reaches?

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The position of a stone thrown vertically up is y(t)=y0+ v0. t-g.t^2 where v0=10m/s is the initial vertical velocity. And g=9.81 m/s^2   Find the speed of the stone at any time t with the method of expansions?   when the speed of the stone will be 0?

An attacker at the base of a castle wall 3.60 m high throws a rock straight up with speed 7.50 m/s from a height of 1.60 m above the ground. a) what is its speed at the top? If not, what initial speed must it have to reach the top? b) Find the change in speed of a rock thrown straight down from the top of the wall at an initial speed of 7.50 m/s and moving between the same two points. c) Does the change in speed of the downward-moving rock agree with the magnitude of the speed change of the rock moving upward between the same elevations? d) Explain physically why it does or does not agree.

A box is thrown upward from a height h = 20 m with an initial speed v = 25m/s that makes an angle of 45 with the horizontal as shown in the figure below. The speed of the box just before touching the ground at point B (va) is equal to: Neglect the effect of air resistance, and use g = 10 m/s2. %3D 45 22.3m/s 35 m/s 50 m/s 32 m/s 28.7 m/s

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