Question

A BALL IS THROWN UPWARDS ON THE MOON WITH AN INITIAL SPEED OF 35m/s .TAKE g ON MOON =1.6
CALCULATE (a)the time taken to reach the maximum height (b)the maximum height reached by the ball (c) its velocity 3 seconds after it has been thrown. can u plss help to solve this.:)

Answer 1

you need to establish your given info first. You know initial velocity ( upwards), acceleration due to gravity ( down wards) and you know that at the maximum height the object is not moving. You know three pieces of info which means you can solve this easily. You would use the formula a=(final velocity-initial velocity)/time. Set any value going up as positive and any value going down as negative, rearrange your formula and solve for time. For the second part, your given info is starting velocity, acceleration and time. You will use the same formula as for the first part , but this time solving for final velocity.Use same sign conventions for direction!