A ball is dropped. Assuming free fall, what is its initial speed? What is its initial acceleration? What is the final acceleration?

A cargo helicopter, descending steadily at a speed of 3.8 m/s, releases a small package. Let upward be the positive direction for this problem. (a) If the package is 94 m above the ground when it is dropped, how long does it take for the package to reach the ground? (a) What is the initial velocity of the package? How does it compare to that of the helicopter? What is its sign? What about the magnitude and sign of the acceleration? s(b) What is its velocity just before it lands? (Indicate the direction with the sign of your answer.)

Hi, I need help with this physcis problem. I've gone over it multiple times and can't firgure it out. Anyway you can help?   A car, initially at rest, accelerates at a constant rate of 2 m/s2 due east (choose east as the positive direction; round your answer to the nearest meter per second; include units)What is its velocity after 1 second? What is its velocity after 2 seconds? What is its velocity after 3 seconds? What is its velocity after 4 seconds? What is its velocity after 5 seconds? What is its velocity after 9 seconds?  If instead a car accelerates at a constant rate of 5 m/s2 due eastWhat is its velocity after 1 second? What is its velocity after 2 seconds? What is its velocity after 3 seconds? If instead a car accelerates at a constant rate of 5 m/s2 due westWhat is its velocity after 1 second?

15) You are standing on a cliff 50 m high and throw a rock with an initial velocity of 20 m/s straight up so that the rock eventually lands at the base of the cliff (50 m below you). How long is the rock in the air? a) What is the maximum height of the rock? b) What is the final velocity of the rock? c)

What is the final velocity for a car that accelerates (from 0 m/s) at a constant rate of 3 m/s2 for a distance of 500 m? Assume the car is traveling in a straight line on a flat planed surface.

A ball is thrown upward in the air with an initial velocity of 40 m/s. How long does it take to reach back to the point it was thrown from?

A car is traveling south at 30 km/h. it rounds a curve, and 6 s later it is traveling west at 30 km/h. the magnitude of the average acceleration of the car is: (the answer is 7.1 km/h s )  I have the answer, but PLEASE show how to get it in step by step detail/explain how ( it's an exam review question but I don't know why that's the answer)

The average acceleration of a moving car is 1.25 m/s?. If the object starts in 2.5 m initial velocity and reaches its final velocity of 22.5 m/s in an initial time of 30 seconds, what is its final time? The average acceleration of a moving train is 17.5 m/s. If the train reaches its final velocity of 75 m/s in a period of 10 minutes, what is its initial velocity?

Let us throw a rock an upward angle of 30 degrees (30°) of the horizontal from the edge of our favorite 100 m cliff and with an initial velocity of 8.5 m/s. Again, we will ask, how long before the rock hits the ground?

A ball is thrown upward with initial velocity of 20 m/s.a) How long is the ball in the air?b) What is the greatest height reached by the ball?c) When is the ball 15 m above the ground?(Hint: Assume the ball starts on the ground at x = 0)